If you ever happen to find yourself in the same room as Jake Gyllenhaal, you had better make damn sure you don't mispronounce the word "melancholy" in front of him. Just don't do it.

This was a lesson Velvet Buzzsaw director Dan Gilroy learned the hard way on Monday, during a Hollywood Reporter interview with the cast at Sundance.

Behold the majesty of Gyllenhaal's ice-cold shutdown:

i can't stop watching this pic.twitter.com/xQhCiymaIQ — hunter harris (@hunteryharris) January 28, 2019

You can watch the entire clip, in all its glory, here:

3,000 retweets later and Gyllenhaal's response has had quite the reaction.

I HAVE WATCHED THIS 15 TIMES he is so...zesty!!! — bolu babalola (@BeeBabs) January 28, 2019

I’m very here for Jake as the snarky son in this family dynamic — Wakanda Dykes / Big Dad Energy (@Laura_K_A) January 28, 2019

there can be 100 people in a room and 99 of them won't correct your pronunciation, but all it takes is one — Netflix Film (@NetflixFilm) January 28, 2019

This GIF may have said it best, though.

waiting for Dan Gilroy to mispronounce melancholy like pic.twitter.com/l9UFGyQGbz — Will “Wright’s Masterclass Haircut” Perkins (@WilliamHPerkins) January 28, 2019

It may not have been the first time that day, but it was surely the last.