Book Boner

When you leave a book open for a while (paper-cover), and when you go to close the book, the cover pops back up.

Tim: Damn my text book has a book boner, I am gonna have to flip it on its other side so it will go away.

by WYALS September 11, 2016

Booboner

When a farely large penis cums all over the cleavage of a womans rack.

I gave her a booboner yesterday. It was hot.

by male4tales June 24, 2009