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A sexual act in which the performer uses their fingers to probe the perineal or anal area of the recipient while both are engaged, although are not required to be, in the classic 69 position. Most commonly performed during times of high stress caused by midterm and/or finals season. Not to be confused with the TI-89 which is a non-sexual way of cheating on an algebra exam.
Eddie: Dude, this calculus exam was so hard that I even started to TI-69 Scarlett last night.
Rogan: I wonder what it feels like to be TI-69ed.
Eddie: She loved it, she even recited the 9x times table.
by Captain Edwards October 18, 2017
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