Running a fake field goal can be a smart move in the NFL if you catch the other team by surprise, or it can turn into a total disaster if you tip off the other team that the fake is coming, and that's exactly what the Ravens did against the Redskins on Sunday.

So how exactly do you tip off the other team and let them know you're running a fake field goal?

You line up your kicker in the wrong spot.

With just under five minutes left in the first half, the Ravens were facing fourth-and-12, so they decided to line up for what should've been an easy 35-yard field goal.

However, as soon as they lined up, it became pretty clear that the Ravens weren't going to be trying a field goal: Right-footed kicker Justin Tucker lined up as a left-footed kicker.

Seriously. The Ravens completely gave away their play.

Justin Tucker is not left-footed. Fox/NFL

Ravens fans were baffled by the call.

Worst fake field goal attempt I've seen...Justin Tucker's a righty and they line up with the holder on the wrong side...#somethingsfishy — Troy Selavka (@troyAsIseeIt) October 9, 2016 Why did the Ravens line up Justin Tucker like he was a left-footed kicker? That was a dead giveaway for the Redskins on that fake FG. — Max Meyer (@TheMaxMeyer) October 9, 2016

The play actually could've worked if Tucker knew how to throw a football. On the play, the football was directly snapped to Tucker, who rolled to his right and had an open receiver.

Of course, when you have a kicker throwing the football, there's a good chance the ball's never going to make it to that open receiver, and that's what happened here. Tucker completely missed his guy, and the Ravens had to turn the ball over on downs.

Anyway, the Ravens lead the Redskins 10-6 at halftime. You can follow along on our CBSSports.com GameTracker by clicking here.

Oh, and just so we never forget, here's what Tucker looks like when he's kicking a field goal with his correct foot.