Coop absolutely cracks us up. Jackie doesn't always find the doctor so humorous, though.
Added:
O'Hara and Jackie are featured in this scene from Nurse Jackie. It's courtesy of the third season premiere.
Added:

Nurse Jackie Season 3 Episode 1 Quotes

Sam, I have a sensitivity question about male piercings.

Zoey

Jackie is married, you stupid fucking goat.

Eddie [to Coop]