My objection was based
on considerations other than DIFFICULTY.
The Big Bang Theory Season 3, Episode 1
Penny, are you experiencing
some sort of DIFFICULTY?
The Big Bang Theory Season 2, Episode 3
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
Does he have DIFFICULTY
maintaining erections?
The Big Bang Theory Season 9, Episode 23