Top Definition
The reduction in size of one's penis to one and a half inches or less due to a sexually disgusting sight.
"Yo momma's so fat she made me pop a Liall."

"Put your clothes back on! I'm popping a Liall here!"

"I think I popped a Liall. I swear this has never happened to me before."

by Ppimp March 15, 2007
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