Tommy Lee Jones -- 'Grumpy' Face Meme Goes Viral

Say goodbye to "Grumpy Cat" ... 'cause last night, his iconic look of curmudgeoness was overtaken by Tommy Lee Jones ... who was apparently unamused with the jokes at the Golden Globes.

TLJ pulled a "not impressed' look of his own while Will Ferrell and Kristen Wiig were cracking jokes during the presentation of the Best Actress in Comedy or Musical award.

Some say Tommy was "in" on the gag ... others say he was just being a grumpy old man.

Bottom line -- his "not amused" face has taken off in Internet-land ... and has already become a popular meme on sites like Reddit ... a la McKayla Maroney and the aforementioned "Grumpy Cat."

So ... congrats?