What is [shifty Sleeves]?
1.
A phrase used to describe a creepy man/woman at a bar or party to alert the crowd that this person looks suspicious and may drop 'something' into your drink.
Creepy Guy walks over to Woman
Woman (as she covers her drink): "Step away from my drink
Shifty Sleeves !"
OR
"Watch out everyone that guy has
shifty sleeves "
See