Secret Knock Detecting Lock

Perfect for tree forts, tree houses, club houses, and anywhere girls and grown-ups are not allowed.

Nov 5, 2009

More info and schematics at Steve Hoefer's blog.

Likes 455 I like it

Recording...

Share this video

See more

technology 96
invention 36
fun 168
door 33
lock 20
secret 6

There are 104 comments. or create an account to see them.

Visit Our Partners

next previous

BFF

Check out the ultimate guide to sports gaming with tips, strategies, ratings and reviews to get the edge on the competition, and more importantly never lose to your stupid brother again.Go now!

http://9.media.collegehumor.com/collegehumor/ch6/0/9/collegehumor.b636e670c5a5d0af48653a791eaf875a.jpg www.todaysbigthing.com

Today's Big Thing is pretty simple. Every day, they find the best thing on the Internet and put it on the site. Just one thing, each day. Yep, that's it.Check out today's big thing.

http://3.media.collegehumor.com/collegehumor/ch6/0/0/collegehumor.ba9952f0ba61483486f5ed5087b456c4.jpg www.popcrunch.com

Hot women, funny pictures and breaking news. Isn't that what we all live for these days? PopCrunch serves it all. Go now!

http://1.media.collegehumor.com/collegehumor/ch6/5/5/collegehumor.b6280f458a923f04095937b5fd53f3b0.jpg www.i-am-bored.com

They state their aim pretty clearly with their domain: A great site for when you're, well, bored. Links, pics, vids, forums, this site has 'em all. Go now!

http://6.media.collegehumor.com/collegehumor/ch6/c/e/collegehumor.2fd3498cf49bfaec5f84933e31a2f21a.jpg www.thechive.com

The Chive is the #1 cure of boredom on the internet. Famous for being The World's Largest Photo Blog, The Chive collects and organizes countless funny, random, sexy and mind-blowing photos. Click HERE for crack in the form of photos.

http://4.media.collegehumor.com/collegehumor/ch6/f/2/collegehumor.dabb204f32db46a9c1a63a9244f6d584.jpg www.celebslam.com

All the news that fit to print, as long as it's about celebrities. Tons of pics and vids of people more attractive than you or I.

http://3.media.collegehumor.com/collegehumor/ch6/b/c/collegehumor.b31f769bf0b06b01e393d13cff4e711b.jpg www.gamespot.com

One of the Internet's best game-related sites. Everything from game news, reviews and downloads. A fantastic time waster all around Check it out.

http://1.media.collegehumor.com/collegehumor/ch6/b/b/collegehumor.8b190c7bbe2b2e73012c665b7ca05748.jpg www.buzzfeed.com

BuzzFeed tracks all of the web's obsessions in realtime. Find outrageous videos, juicy gossip, an obscure subculture breaking into the mainstream, or just an ordinary guy having his glorious 15 minutes of fame. Check out BuzzFeed now!

http://1.media.collegehumor.com/collegehumor/ch6/b/a/collegehumor.e6338e3bfa73110ea4eead8a790d18fa.jpg www.stumbleupon.com

Since you're going to spend your time clicking around the Internet anyway, why not do it with StumbleUpon? Let them show you everything, including that one site where the Asian girl's eyes follow the mouse. Go. Right now.

http://7.media.collegehumor.com/collegehumor/ch6/a/9/collegehumor.d6d00cca94b3f9ca4c68f66962323e9a.jpg www.theonion.com

Hysterical news, stats and their new Onion News Network video section make this site one of the best around. Check out The Onion Store and marvel at the ingenious Gotcha Box.

http://9.media.collegehumor.com/collegehumor/ch6/2/4/collegehumor.4e8e64d280e4f4f8bf2d71d4f939d0be.jpg www.hollywoodtuna.com

Hollywood Tuna has everything you need, if the things you need are all celebrity related. From celeb pics and vids to nip slips, Hollywood Tuna does it all and does it well.

http://2.media.collegehumor.com/collegehumor/ch6/3/e/collegehumor.d70548c3b6562dced25c23fe67457e9a.jpg www.bullz-eye.com

With hot models, sports, fitness and entertainment news, hot models and hot models, Bullz-Eye.com has become one of the Web's most popular dude sites.

http://1.media.collegehumor.com/collegehumor/ch6/9/c/collegehumor.ed514d09f8c78dcce1bfbdcc4012c4c7.jpg www.egotastic.com

With arguably the largest celeb nip slip collection anywhere online, Egotastic is your one-stop source for celeb news, pics and vids. Check it out.

http://5.media.collegehumor.com/collegehumor/ch6/c/f/collegehumor.e94d0e6c15227a3212c2f22fe08b56a7.jpg www.sportspickle.com

SportsPickle is your best and only source for satirical sports news. We'd like to say they're above poking fun of the WNBA, but we'd be lying. Go now!

http://9.media.collegehumor.com/collegehumor/ch6/5/e/collegehumor.c533d9a5a12197ed850839ee7db28d8f.jpg burbia.com/?ref=ch23

Crazy photos and vids, neighbors from hell, weed wacking as recreational sport – all from the land of MILFs and honey. The burbs like you've never seen them. Visit Burbia.

http://7.media.collegehumor.com/collegehumor/ch6/c/b/collegehumor.88a3bc6cad6e95c84144399bdc49491e.jpeg www.ign.com

Reading is over-rated. Now you can watch all your favorite video game news, reviews and strategies on IGN.comin HD! Why haven't you clicked yet? Go now!