Sneaky Tip 

When the male penis is sticking out of a pair of boxers without the male noticing until confronted by someone that notices it and tells you.

Hey dude you have a sneaky tip man! Cover that up!

Sneaky Tip by airsofter53 February 20, 2015

Sneak Tip 

The Down Low. To do something on the sneak tip is to do it discretely.

"Yo, you gonna roll to that freaks crib tonight?"

"Yeah, but my girlies adround, it's gotta be on the sneak tip"

Sneak Tip by Leviathin November 2, 2008