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

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

That's even factoring in your DIFFICULTY...
The Big Bang Theory Season 4, Episode 9

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

I have such DIFFICULTY
speaking to women...
The Big Bang Theory Season 1, Episode 6