A sly randy refers to a situation in which Individual A leads Individual B to believe that their relationship is entirely platonic (ie. a Randy Jackson "dawg"). This is then proven to be a ruse when Individual A surreptitiously rubs his shroom tip against Individual B's daffodil.
Tina: But I thought you and Brad were in the Friendzone?
Tiffany: I thought so too, until he pulled a sly randy...
To go for a sneaky pint or a sneaky fag. To do something showing how much of a cute cunt you are. Drinking on the sly. Used only by a select group of skyboys in Connemara.
Are we sly doggin it down the pub tonight lads?
Having a cheeky wank without anyone knowing.
Be right back I'm off to sly one off before my wife gets back
When you need a sneaky little nap in the middle of the day.
‘Cover for me during lunch - I’m going for a sly-down!’
A sociopathic female who fakes innocent and cute but is actually very cunning, and she uses this to her advantage- manipulating those around her to do what she wants
Don’t trust her, she’s a sly bunny.