Top Definition
Noun.
When a fortuitous coincidence brings about the opportunity for an unplanned or unexpected bout of sexual intercourse.

or Verb.
"luckfucked"
Noun:

Dave: How was that party last night?

Pete: Man, it was awesome. I met this blonde chick and I got me a luck fuck.

Verb:

Sue: How was your birthday?

Valerie: It was great. I got luckfucked at the club.
by Joyanes October 16, 2011

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