Unjustifiably spill a bottle of water at someone who presumably humiliated you.
1.
Sitting in a restaurant person A says that person B has a big butt. Person B in response does the Efre on person A.

2.
A: "You have a big butt!"
B: "Don't say that! I will do the Efre on you!"
by One of the people July 11, 2008
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Friend 1:Does Bobby have EFR on the Cabo trip this week?
Friend 2: Absolutely not. He’s got fucking rights with me, but not exclusive. Too many available men for him to have EFR with me the whole trip.
by Mo money mo problems August 24, 2020
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