It's best to be sporting clay when going skinny dipping with a group. You don't want to go full turtle, but you don't want to scare anyone with a full erection, either
When you squeeze a full bottle of lube into a 70 year old woman's vagina and her old vag powder mixes with the lube and becomes a thickclay-like substance
"Dude i ate so much granny clay i shit bricks!" "Bro i made a mold of my penis with granny clay!"