The act of giving fellatio with a mouth full of squishy tapioca pearls.

"Taiwanese," because the Taiwanese invented bubble tea, a world-famous iced tea drink containing tapioca pearls.
"Tumbler," because the motion of the small blobs in one's mouth evokes the rock tumbler, a device for polishing pebbles.
Malika - "So you gave Titus the old 'Taiwanese Tumbler?'"
Peggy - "Hell yeah! I had so many of those thingies in my mouth that I looked like a chipmunk!"
by Epic Tetus March 4, 2015
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