When a person has a boner that looks like and or feels like a erection that is strong and or going to burst. One could even use said erection to poke many things.
Jim: Hey man how did you and sarah work out last night.
Bob:dude I got a "Rocket Fist" and she saw. She couldn't stop looking.
Bob:dude I got a "Rocket Fist" and she saw. She couldn't stop looking.
by Some FN Guy December 26, 2009
Get the Rocket Fistmug. by Murphsusername September 30, 2011
Get the Caribou Fistmug. 
by Bölima November 24, 2007
Get the hole fistingmug. by Alleycat74 April 15, 2022
Get the lemur fistmug. Canadians, in their vast desire to one up the rest of North America, created a way of fisting someone in the style of their favorite mammal. To perform the maneuver you must have extremely strong digits and the man/woman must have severely trained their hole. Pass your hands across your chest, stopped only by hooking your thumbs. They should now resemble the antlers of the great Canadian Moose. Lube vigorously with maple syrup. Stare deeply into your partner's eyes and give a curt, respectful Canadian nod. Roar the call of the Moose and shove extended Moose horns into the eager hole. Prep for most chilling orgasm of your life.
by GWCovert January 19, 2016
Get the Canadian Fistingmug. When fisting a girl you bring your hand to your lists give it half a chef's kiss, the continue to shove your hand in her chooch and open your fist like a flower.
by fat_terry June 20, 2020
Get the chef's fistmug.