stiffy flapping 

Combining Viagra and Redbul and having sex in order to increase intensity and the length of sexual encounters.

That girls walking like she was stiffy flapping all night last night.

stiffy flapping by JakeMontana February 12, 2017

slippy stiffy flapping 

Combining Viagra and Red Bull to increase sexual performance and stamina. Then creating a small retaining pond with a bed by rolling up blankets and placing them near the edges of the bed and then laying plastic over it so liquid won't run out. Then filling the small pond with several bottles of baby oil and stiffy flapping in the home made pond of oil.

Slippy stiffy flapping with that Victorias Secret model last night was the greatest night of my life.

slippy stiffy flapping by JakeMontana February 12, 2017

Stiffy Flipping 

Combining ecstasy and viagra to increase the sexual desires of a long night of partying.

dumbass1-Bro, let's start stiffy flipping!

dumbass2-Aight, good idea man i'm feelin small anyways

Stiffy Flipping by suckitbrah January 23, 2011