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1.
A public restroom phenomenon in which the turd dumper needs complete privacy in order to do their thing. The presence of another person in the adjacent stall, or even the restroom, will cause sphincters to pucker to less than a 1 cm.

This is especially true if the turd dumper knows he/she is going to have an embarrassing explosive turd, complete with lots of gas and splashing sounds.

Two persons with turd insecurity in adjacent stalls results in a very uncomfortable , time consuming experience for both. A solution is to flush the toilet in sync with dumping the turd, hopefully masking the dump.
His sphincter tight with turd insecurity, Steve hoped the person in the next stall would leave. In the next stall, Mark harbored the same hopes.
by Tuftskins April 30, 2009