When a guy cums in a girl's ear.
When Ella and Joe and I had a three some, Joe cumed in Ella and I's ear at the same time, and gave us hot brains!!
by AMBSZ July 30, 2006
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When a girl is going down on two guys at once and they both blow their loads simultaneously in her ears
'what did you say? I just got a hot brain injection. I can't hear shit!' said Lisa
by Buzzsaw Jones March 17, 2005
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