1 definition by Jim Blyth

Mail is a slang sometimes said softly during anal sex by heterosexuals or homosexuals. It is said right before the penis is inserted into the other person's anus.
Note: It is never shouted or written with an "!" because during so might scare the receiever or cause them to scrim and could cause anal rupture.
Proper way
A: "Hey there. Mail."
B: "Uhhwhwhhhh. Yessssssssss."

Not the proper way
A: "....MAIL!"
by Jim Blyth November 11, 2007
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