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1.
a sweaty, swampy undercarriage that results from long walks through the mall. produces discomfort, especially if victim also suffers from swamp ass
Rick: Hey Lay Up, you wanna go jogging?

Lay Up: Sorry bro, I just got home from shopping. I gotta shower up and rest these mall balls for awhile.
by Uncle Rick Rude October 12, 2009
 
2.
When your balls get all sweaty,smelly and sticky from walking in the mall all day.
Damn I got a major case of mall balls while shopping all day with Mary.
by Pdizzle08 November 08, 2008