Top Definition
When someone excretes on to a trampoline when it is being bounced on and it comes back up and hits you.
Harry: I was watching that jamie on his trampoline yesterday and he did a brown bounceback and it covered his legs.

Kirk: What a sick freak, that is not dope!
#trampoline #poo #excretion #bouncing #brown #bounceback.
by rrrrrrooooooooooooononnnnnnr November 07, 2008
6 Words related to Brown bounceback
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