yo-yo knickers

a lady, or in this age, gentleman, who is selectively promiscuous.

first seen in Ireland in the 1970s

She must have yo-yo knickers to have slept with that many guys.

by heather September 24, 2004

yo yo knickers

An Easy Girl. a loose Woman. A slag

"I shagged That Girl last night"
"What Yo Yo Knickers? Who hasn't?"

by SteveDave May 9, 2003