Top definition
The act of "greek" intercourse with a lady, during which you shoot her parents.

known in england as an inbound injustice.
"I shall have my revenge! Donald gave me a Backdoor Batman last night and I demand justice!"

Giraffe 1
"got all messed up on bath salts last night and gave my girl a Backdoor Batman."

Giraffe 2
"What the hell!? Why were her parents in the room?"
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