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1.
a slowball call refers to one's cue stick gently hitting the cue ball for a slowly moving shot. used in delicate situations. also, a slowbALL call may be made whenever deemed necessary
what should i do?...slowbALL!!!!!
by evan July 13, 2004
 
2.
snorting a mixture of crushed oxycontin (time release coating peeled off) and cocaine

for the time being, slowballing is the closest i'll allow myself to get to speedballing (mixing heroine and cocaine).
by Richard M May 12, 2006