When you walk in on your brother (could also be a friend) getting a blow job in your room. It could also apply to other sexual activities.
Ryan: so I walked into my room last night and mary was proving that her milkshake brings all the boys to the yard to my brother.
Callie:Wow! what a slut!!! you should have been like, "now thats a thanks bro if I've ever seen one!"
Callie:Wow! what a slut!!! you should have been like, "now thats a thanks bro if I've ever seen one!"
by cakepan face March 4, 2011
Get the thanks bromug. An act of declining
by Mangolandzs April 10, 2023
Get the No thanks bromug.