a common diagnosis given by a trained medical professional when there is nothing wrong with his patient
patient: "Yo doc, my knee hurts like whoa"
doctor:"Hmm...looks like Iliotibial Band Friction. Have a lollipop."
doctor:"Hmm...looks like Iliotibial Band Friction. Have a lollipop."
by The Knee Doctor September 30, 2011

1) The force applied to one's penis during masturbation or hand job. Levels of "HDF" can become increasingly uncomfortable without the use of proper lubrication.
2) The act of male masturbation
2) The act of male masturbation
by kilo2824 July 2, 2011

One theory to explain the occurrence of a hole in the crotch of a mans jeans. Over time the material is eroded by the constant friction of the swinging ball bag.
Person 1: 'Dude, your nuts are hanging out of that hole in your jeans'.....
Person 2: 'Yeah sorry man, ball bag friction theory'
Person 2: 'Yeah sorry man, ball bag friction theory'
by Yippikiai June 9, 2013

When a guy wants to talk to a girl but he doesn’t know what to say to her he asks her if she has ever run a friction crane. Nobody really knows what a friction crane is but it is a way to start a conversation.
Guy: Have you ever run a friction crane?
Girl: Whats that?
Guy: I don’t know but I thought you were pretty and I wanted to talk to you.
Girl: Whats that?
Guy: I don’t know but I thought you were pretty and I wanted to talk to you.
by Friction crane guy January 1, 2023

by The dog star January 8, 2023

It is the force between two surfaces in contact that acts in a direction opposite to the direction of motion and causes the object to slow down and stop.
by poggings32 May 28, 2022

Savannah: Hey can I wet check you?
Lydia: Sure, but I’m a little dry!
Savannah: Owwwww, you gave my hand a friction burn!
Lydia: Sure, but I’m a little dry!
Savannah: Owwwww, you gave my hand a friction burn!
by your_favorite_enemy February 23, 2024
