Top Definition
A topless gathering of friends which may occasionally result in complete loss of clothing, pizza ordering, and sex. Tits O'Clock may occur on any day at any time, usually on short notice. Lesbian and bicurious encounters are typically involved.
Last night's Tits O'Clock ended in an accidental orgy. Whoops! Welcome to college.
by Honors College 403A October 13, 2011

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