To Jizz ones pants at any given moment, regardless of normal sexual encounters. The saturday night live skit "Jizz In My Pants" emphasizes the disastrous effects of a rallen multiple times.
So i was sitting in math class, and I just rallened the lining of my boxer shorts
by Curiousp January 14, 2009
awesome, amazing, cool, and any positive word there is.
"That guy is so cool"
"Yeah, that's Rallen"
by csh256 May 05, 2012

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