Top Definition
Anyone who makes a habit of sleeping with a different person each weekend, or more often as the case may be. Sex as a sport. Turbocharged slut.
"That girl has been with six guys in the last six weeks".

"Yeah, she's a real Hobbybottom."

"That guy did three chicks at the party last night."

"One word, Hobbybottom."
by infiniphonic March 20, 2010
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