Top Definition
The act of invading a friend's pool, and going for a swim without its owner's knowledge. The friend can either be asleep, in a windowless room, away from the house. The friend can't have given any prior permission to enter the pool: It's actually a bonus to break the rules in order to therylflyze.
John: I totally therylflyzed at jenn's house last night... she has no idea.
Sally: Sweet, I'm coming next time.
Jenn: What?

John: Don't worry about it.
by hiddenwatcher July 08, 2010
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