Jimmie Johnson pokes fun at Dale Jr. autograph mishap

When Monster Energy NASCAR Cup Series drivers get into autograph mode, there's no telling what might happen. Sometimes, they even sign memorabilia featuring a different driver.

That's exactly what happened to Dale Earnhardt Jr. recently, which allowed seven-time champion Jimmie Johnson to have some fun with his Hendrick Motorsports teammate.

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@DaleJrpic.twitter.com/glmeETOR06

— Jimmie Johnson (@JimmieJohnson) October 3, 2017

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This one in particular will be of some value, yes? https://t.co/9h6f1S0De6

— Dale Earnhardt Jr. (@DaleJr) October 3, 2017

We agree with Junior. That piece of merchandise was worth a bunch already, and the hilarious "oops" just upped the price.