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The act of having sex and then leaving with no strings attached. A one-night stand.
'Are you going to call that girl you hooked up with last night?'
'Nah, it was a smash-n-dash.'
by D. Bougs August 28, 2006

Words related to Smash-n-dash

bang. hook-up one-night stand sex wham-bam-thank you-mam