A coordinated time and place where two people plan to slay each other. A "slaydate" typically takes place in the back seat of a vehicle in an desolate area.
Tony wants to meet us at the bar, but he's got a slaydate set up with that hot waitress with big hammers. I think he's meeting her behind that old folks home!
I was at this indie show and one of the guitarists on stage was playing a seven-string Ibanez, occasionally windmilled and looked uncomfortable with NOT playing fast. My slaydar went off and I talked to him after the show; my suspicions were confirmed. We wound up talking about our favorite bands.
to be good, cool, awesome, amazing, complete, or effective; to have a responsibility or duty that must be done but is put off and when youre high you gather a better reason to take care of that responsibility or duty that makes you want to do it.
Mom: Can you go get some food for this weekend at the store?