Frontside 

When you sit reverse or backwards on the toilet and take a dump, or masturbate.

Dude, how did you leave skidmarks on that part of the toilet, were you sitting frontside?
I was definitely frontsiding that shit!
I frontsided the shit out of my neighbors toilet!

Frontside by Frontside UpperDecker November 27, 2012

frontside flip 

The combination of a frontside 180 and a kickflip

i just frontside fliped a 50 stair

frontside flip by spark211 February 18, 2009

Frontside Ollie 

Blowjob. Was used for the first time in Robins single "Frontside Ollie" in Finland.

Hes sister suddenly pulled the perfect "frontside ollie"

Frontside Ollie by jipx March 13, 2012

Frontside McGillicuddy 

When a girl funnels 4+oz of Dr McGillicuddy's Fireball whiskey into her vaginal entry, and then proceeds to expulse the liquid into the partner(s) mouth(s) from no less than 1 metric meter away.

Oh man, last night Shirley gave me a frontside McGillicuddy and I was so effed that I pissed all over my laptop.

Frontside McGillicuddy by JCity September 29, 2009

frontside crawl 

It's when you're getting a blowjob and the girl takes her tongue and licks the bottom of your dick REAL SLOW from nuts to dickhead.

I knew that ho for all but 3 hours and she was givin' up the frontside crawl and shit yo.

frontside crawl by That crazy cracker Newsense October 22, 2004

Frontside 90 Faceplant

When the average person participates in an extreme sport(wakeboarding, snowboarding...) and rather than being experienced enough to do the Frontside 1080, McTwist, Backside whatever...he/she does the "Frontside 90 Faceplant". In my experience, your board rotates forward and you slam you face into whatever terrain you are working with (usually causing extreme pain and irritation). Thriling for onlookers. Not so much fun for you.
This trick is usually carried out at higher speeds.

While snowboarding, the impact of the Frontside 90 Faceplant may result in one more rotation causing you to lie on your back in agony.

Audience: "OOOooohhhh......ouch! That was a great Frontside 90 Faceplant!!"

Victim: (After swimming to catch his/her stray wakeboard with what, at this point, may or may not be a concussion) "Here, take this stupid thing. I'm done. Let me back into the boat."

Frontside 90 Faceplant by Amy_4784 October 13, 2008

frontside boardslide 

a snowboarding or skate trick. when you pop onto a box or rail, turning your body 90 degrees backwards, landing with your deck in a boardslide (perpendicular to the feature) facing uphill or backwards as you slide down the rail.

"yo, did you see that kid's frontside boardslide on that DFD rail, sickk..."

"i smashed my face slipping out on a frontside yesterday."

frontside boardslide by t-fried-rice. March 5, 2009