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Acronym: Side-By-Side Insertion

A dude and his bro banging chicks next to each other.
Bro #1: Dude, wanna get some honeys and SBSI tonight?

Bro #2: Hell yeah, double the titties!
by TheChosenOne83 October 18, 2011
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Jul 1 Word of the Day
sending two texts in a row without a reply inbetween.
Rachel: whats up?
Tessa: not to much! hbu?
Tessa: dude, i'm so bored.
Rachel: stop double texting me.
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