(Noun). A sexual act. When a woman (typically with small hands) clasps their hands together in a prayer shape and rapidly slips their hands up and down a mans ass crack. This process usually involves a lot of oil.
Koko gave Dave a Slippery Mantis during a rub n’ tug.
When a female (preferably with smaller hands) clasps their hands together in a prayer like shape and run their hands up and down another person’s ass crack rapidly. This includes lots of oil.
“Jane gave joe the Slippery Mantis during a rub’n tug session.”