2 definitions by shlongsisters

A goal scored in the last minutes of a game that has no effect on the outcome of the game.
A combination of the word protocol and the word goal.
Yair: Bayern scored their second goal in the game!
Stav: Yeah but its the last 5 minutes they're still going to lose the game...

Yair: yeah, its a protogoal.
by shlongsisters April 19, 2023
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The female equivalent of "Tunnel Buddies". When two females have had coitus with the same male ( not necessarily at the same time).
Stav: Omg did you hear that Shay and Maya both had sex with Harel!1!1!1
Tamar: So are they Shlong Sisters?
Stav: Yup!1!1!
by shlongsisters May 7, 2021
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