When you remove the matress on the top bunk of the bunk bed, lie on your stomach, and stick your dick through an opening on the bedframe so the other person can suck it
"Damn, we were getting freaky last night! She has a bunk bed and we removed the top matress so she could give me bunk bed head. She sucked my dick like she was a hamster!"
by Herr Schwanze January 26, 2021