Slippery Bugger 

an incredibly elusive person or thing.

"did you see that guy dodge the defender? he's a slippery bugger!"

"you cant catch a dart frog. they're slippery buggers!"

Slippery Bugger by maximushyrule June 25, 2009

Slippery burger 

When you put too much sauce on a burger and spend the entire time fighting to keep to keep it together.

Person A: *covers burger in ketchup*
Person B: how much ketchup??? You’ll end up with a slippery burger…..

Slippery burger by Itsanoun December 6, 2021