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1.
Watergirl or Female manager for an athletic team.
Player A: God this practice is so hard!
Player B: At least we can stare at the Cup Sluts when they bring us water.
Player A: CUP SLUTS! WATER OVER HERE!
Player B: Good call.
by MaristLax4Life February 03, 2011
 
2.
A person in the office who uses anyone else's tea/coffee mug. Can cause a chain reaction where a normally mugnogomous person has to become a cupslut.
"Where is my Tufty club mug?"
"The cupslut is using it."
"Nice. I'll have to use another. Who doesn't have lurgy?"
by PB1973 August 08, 2007