Power Swack 

To successfully masturbate and cum in under a minute. Also known as "Power Shwack". Commonly done in Stripper booths (see Lusty Lady) and friends/relatives bathrooms while visiting. The power swack has been gaining mass popularity on the internet on sites such as chat roulette and various other webcam or social networking sites.
Power Swacking has also become a popular game amongst college students. Where several students will gather around trying to achieve orgasm before the competitor.

Tyler Hey, the peep show cafe has dollar booths.

Daniel What?!! I might have to go power swack before work.

Garett Personally...you fags disgust me.

Power Swack by [Strider] April 12, 2010

Powerstack 

To engorge one's self in a copious amount of highly processed frozen and/or fast foods, quickly followed by a massive intake of alcohol and a puff of crack to top it off.

I'm gonna lose some weight and get my life back together, but before that I'm gonna do me a powerstack!

Powerstack by Xtra Tartarsawse December 13, 2014

sack-poker 

A girl that is so hot that fucking her with just your dick isnt enough so you have to start poking your sack in as well.

Lindsey Lohan is so hot, she's definately a sack-poker. I'd really love to tickle her grundel, too.

sack-poker by Bryan Cutsinger November 6, 2004