jackhand
A jackhand is when a man grabs his meat with both hands like a beast and has his partner hold on tight while he goes wild like a jackhammer. Women can do it too, but they use a dildo instead of a brain.
My uncle did a jackhand at the bar and got kicked out for laughing too loud.
My friend’s dad does a jackhand every time he sees his ex.
That guy at the gym does a jackhand so hard, he probably thinks he’s a superhero.