I think I’ve seen this one before

A comical phrase used by the boys to make gay jokes at or amongst themselves. Stated during the observation of a scene that resembles the plot or elements of a porn video. Also used when witnessing a series of events that, at that moment, could seemingly unravel into a sticky situation.

Pace walks into the room holding a pumpkin. Craigs immediately announces “I think i’ve seen this one before.”

I ain't never seen two pretty best friends

It means you haven't two pretty ladies or men together as friends and you get the feeling that one of them are ugly

"I ain't never seen two pretty best friends! "
Oh!

I aint ever seen two pretty best friends. always one of 'em always gotta be ugly

When you see a set of two friends.. always one of them have to be ugly

See those people over there? They are best friends and honestly... I aint ever seen two pretty best friends. always one of 'em always gotta be ugly