Top definition
An unofficial form of prostitution where (usually a woman) has money added to her prepaid cellphone in exchange for sex. Used on the island of St. Kitts and possibly other caribbean nations.
"What's up?'
"Oh, not much, my girl dropped by for some top up sex earlier"
"How much did you give her?"
"20 EC"
by Ebonyks December 28, 2009
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