The act of 3 brothers and their cousin having an eight-some on a trundle bed that is between two bunk-beds. Furthermore, the youngest of the 4 relatives wakes up with 2 pink eyes, cum-crusted eyelids, and a frozen penis.
Verb:
Young Zach trundled last night and now has to go see a doctor ASAP!
He will never trundle again...
Noun:
The trundle last night was awesome! Except for the medical bills...
Two guys who rub the areas between balls and buttocks together for a good time. Gooch to gooch.
We got a couple of trundle brothers mussing up the sheeting in room 167.