Double Dulahan

During a MMF threesome, with the F in the middle of two M's, you must insert both your nozzles with confidence, thrusting deeply and truly in order to touch the tip of your bro on the other end. Once you've done the double dulahan, your bond can only grow stronger.

I've seen the way you look at me bro, you want to take our friendship to the next level? Call up Becky, she'd be down to facilitate a double dulahan.

double railroad

Double penetration, with one guy wearing a conductors hat, and all parties involved make choo-choo noises.

I couldn't get any sleep last night because Victoria was getting double railroaded next door.

double tune

When you put the same song on your music player twice or more so that when you shuffle, you have a higher chance of getting that song.

A: Have you heard the song "500 miles" yet?
B: I LOVE that song, I even double tuned it on my iPod

double-cannot

When you cannot do something twice

When you cannot do something twice, it needs to be the SAME thing like: I double-cannot do something explosive in my house because it will destroy my house!!!

Double Uie

Term coined to describe missing an exit ramp on the interstate and taking various twists and turns to get your ass back on track to your intended destination.

Double Uie ain’t a word! You made that shit up!

Oh yeah? Wait one hour and that bitch will be a word! Urban Dictionary doesn’t bullshit