A fraternity or sorority event in which the members usually aren't notified of the even until close to when it will happen, so they must "dash" to get a date. Most fraternity ones are just drinking with your date in matching, themed t-shirts.
Suzie: I just got invited to a Sigma Pi fraternity date dash.
Jenny: Are you gonna go?
Suzie: Of course! Free alcohol and a free shirt.
by EmTem December 20, 2011
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The act of convincing someone you are going to perform coitus. You then use their facilities to drop a bowel movement. Upon finishing said bowel movement you proceed to exit quite hastily.
Dam that girl comes in like we were gonna get it on, she took a dump and ran. She just got me with a date dump and dash
by Jackiepaper June 24, 2017
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When you go on a date with a women and on the second date you get her pregnant so you make a run for it.
On my second date I got my girl pregnant so I moved to Canada.

life is two dates and a dash
by Dem guy January 29, 2019
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