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3.
To perform the act depicted in the infamous internet shock image 'tubgirl', either on yourself (standard tubgirling), or on another or others (distrubuted tubgirling).

The essential aspect of any good tubgirling is not the colour of fluid used, but the standard position assumed: Laying on one's back, knees placed as close to the ears as possible.
1) Last night I was tubgirling in a kiddy pool with some trannies I found in the park

2) As I walked into the midget room, I caught some splashback from the rampant tubgirling contained within.
by d0zerzz October 26, 2006
 
1.
Going on a spree of posting tubgirl on an internet forum.

Shit, I got IP banned for tubgirling the guitar forum.
by HCUser October 10, 2006
 
2.
Going on a spree of posting tubgirl on an internet forum.
Shit, I got IP banned for tubgirling Harmony Central.
by HCUser October 06, 2006