The Cincinnati Bengals pulled off a huge upset on Monday night, defeating the heavily-favored Pittsburgh Steelers, 27-17. Injured Bengals quarterback Joe Burrow was tuned in to the contest from his home, and he quickly took to Twitter to celebrate Cincinnati's huge win.

Burrow sent out a one-word tweet to commemorate the victory:

Burrow, who recently underwent successful surgery on his injured knee, is fully expected to recover from a torn ACL and MCL. Selected as the first overall pick in the 2020 draft, the rookie was having a tremendous debut campaign for the Bengals, which was cut short by a gruesome, season-ending Week 11 injury. At this point, there is optimism that Burrow will be able to make his return for Cincinnati's 2021 season opener.

Surely, Monday's victory served as a great morale booster for an embattled Burrow.

Prior to their Week 15 win of the Steelers, the last time the Bengals tasted victory was back in Week 8 against the Tennessee Titans. They've since lost five straight, including a 36-10 pummeling by Pittsburgh from Week 10.

Coming into Monday's rematch, Cincinnati were 13-point underdogs. Needless to say, the Bengals just pulled off one of the biggest upsets of the season against a Steelers side that is now on a full-blown slump.

After winning their first 11 games of the season, the Steelers have now lost three consecutive games. They are no longer looking as invincible as they once were, and there's no denying that their slump comes at a terrible time, with the playoffs just around the corner.