The act where a male assumes the top position during the sexual act of 69ing, opposed to the usual bottom position where the female is on top. This can be also referred to as “calling top bunk”, and “top bunking” if used as a verb.
She wanted to 69, but she is bigger than me and would crush my face, so I called topbunk.
(verb)- To hook up with a person in the top bunk of a bunk bed. Can be modified into a double-bunk if there is another couple hooking up on the bottom bunk.
Typically occurs in a college dorm setting.
Can be abbreviated "TB"
Did you hear? Mark top-bunked that girl he was dancing with at the party last night!