What, you couldn't improvise pubes?
"Didn't have a costume for a party so i had to improvise."
Sometimes there are questions on tests that don't make sense, so you gotta improvise.
"Who needs wallpaper? Here at the University of Richmond we improvise."
What do you do when you're missing a bumper? Improvise!
Sometimes when you're home for the summer, you gotta improvise.