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2.
The Opposite of shitballs. When something goes well or better than expected
Sweetballs!! I just found five bucks on the ground!

by Smokey J October 23, 2007
 
1.
an expression denoting something pleasurable, awesome, attractive, or good.
"Dude, that girl is totally checking you out." "....sweet balls!"
by Britton B. May 02, 2007