Beyonce -- who has yet to address the allegations she faked her way through the National Anthem on Inauguration day -- posted the cryptic snapshot on Instagram Saturday night.
Bey is seen wearing a sweatshirt -- while practicing for her upcoming Super Bowl gig -- which poses the question "Can I Live?" ... the title of a song by her husband, Jay-Z.
It's clear from the pic ... either Beyonce is telling the world to back the heck off ... or she's just a totally supportive wife.
So we gotta ask ...