Donald Young will likely be removing ‘son of a biscuit’ from his on-court vocabulary. (Geoff Burke/USA TODAY Sports)

Tennis is no stranger to profanity – from the weekend warriors to the pros, a missed shot will occasionally elicit some four-letter words.

(And then there are the John McEnroe tirades.)

But when Donald Young yelled “son of a biscuit” at the first round of the Sarasota challenger after missing a routine backhand, it seemed innocuous enough that surely he wouldn’t get punished.

Unfortunately for Young, who’s currently ranked No. 81 in the world, the chair umpire disagreed and assessed him a warning for his seemingly G-rated comment.

Young was stunned, asking the chair umpire, “I said, ‘son of a biscuit,’ that’s a problem now?” before going back to return serve.

The 24-year-old Young went to to defeat his opponent, Alexander Zverev, a 16-year-old qualifier, 6-4, 7-5, and advanced to the third round when Zverev’s brother, Mischa Zverev retired after Young won the first set, 6-4.

(H/T For the Win)