1 definition by Robert From Ottawa

n. A serious condition known to cause the loss of one testicle. Also related to thwap. If left untreated, the phwat will take over, leaving nothing but thwap in it's path
Oh no! Britewire has come down with phwat.

"Everytime I look into it, the term thwap comes up."
"Phwat?"
by Robert From Ottawa November 27, 2004

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