Certain parts of the body that make better tattoos canvases than others, and next to the armpit, the belly button is the worst. There really are no good belly button tattoos, only the bad and the really bad. 

There seems to be a common theme among them, too. See it you can figure out what it is. 

 

1.

undefined

Source: buzzmedia

2. 

undefined

Source: girlstattoos

3.

undefined

Source: universalmusings

4.

 undefined

Source: lolshelf

 5.

undefined

Source: tattoostime

 6.

undefined

Source: gasoline 

 7.

undefined

Source: photobucket