To spend time with your sista (or sister) via phone. Other Variations: Auto-sistating-when both sista's are on the phone; Manual-sistating-sistating while attempting to drive a manual transmission vehicle; Personal-sistating-spending time together in person; Self-sistating-just thinking about your sista.

While I was on the highway, I thought I was sistating with Kathryn, but I was really auto-sistating because she was in the car on the way home.

Sistating by Dee B & Kathryn T November 2, 2007

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Sismantic

The equivalent of a bromance, but between girls opposed to guys

Dave Franco and Zac Effron are really bromantic; it's like our sismantic relationship.

Sismantic by Kitkatdoll23 July 28, 2014

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sistank

A female version of a "brotank"

"That chick is rockin' the heck out of that sistank!"

sistank by Bigpapaboomer May 30, 2016

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sistatwista

Oral sex between two allegedly heterosexual female friends, intensified when said friends are wasted. Meant in a "no-homo" fashion.

Bro 1: Did my gf hookup with yours last night ?
Bro 2: It was a sistatwista. Totally hot, brah!

sistatwista by InsolentInterrobang November 18, 2016

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