The act of placing one or a few gushers between of someone's booty cheeks, and eating them from the booty.
Kaga: Hey Kei, may I perform Gusher cheeks?
Kei: No, I don't like the feeling of gusher juice in my cheeks. Maybe tomorrow
Kaga: Okay, I'll save these gushers for later, I know you like the blue ones. :)
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