That's because you're a douchebag.

[Officer Leary is on the witness stand] Officer Leary:
I told him to move on, but he continued to use profanity and he refused to leave the premises. Judge Rayford:
What sort of profanity? Officer Leary:
You know, the normal kind. Judge Rayford:
Officer Leary, we've all heard these words before, now for the record what did he say? Officer Leary:
[uncomfortably]
He used... "fuck" a lot. [quiet laughter from the gallery] Officer Leary:
..."piss on you"... [more laughter] Officer Leary:
...then said he was gonna... "bung-hole the short order chef"... "cream on the waitress"... [more laughter] Officer Leary:
...stuff like that, Your Honor. Dapper Defendant:
There's a very good reason for all of that, Your Honor. Judge Rayford:
Oh? What is that? Dapper Defendant:
I'm a diabetic. [loud laughter from the gallery] Judge Rayford:
I fail to see the connection. I've never heard of diabetes causing foul language! Dapper Defendant:
That's because you're a douchebag. [entire courtroom erupts into laughter, including Officer Leary before he catches himself and forces a poker face]