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?"
"The cupslut is using it."
"Nice. I'll have to use another. Who doesn't have lurgy?"
by PB1973 August 9, 2007
Get the Cupslutmug.