
I'm having some DIFFICULTY bonding
with a colleague at work...
The Big Bang Theory Season 2, Episode 13

that you have DIFFICULTY
being close with her.
The Big Bang Theory Season 7, Episode 21

Penny, are you experiencing
some sort of DIFFICULTY?
The Big Bang Theory Season 2, Episode 3

Does he have DIFFICULTY
maintaining erections?
The Big Bang Theory Season 9, Episode 23

but DIFFICULTY initiating a
urine stream could be a symptom
The Big Bang Theory Season 5, Episode 17