Taylor Swift
Taylor Swift visits The Tonight Show Starring Jimmy Fallon on Feb. 17, 2015 in New York City.
Theo Wargo/NBC/Getty Images for "The Tonight Show Starring Jimmy Fallon"
Taylor Swift is well-known as the most enthusiastic audience participant, but she took things to a whole new level when Jimmy Fallon presented her with "footage" of the two of them performing elaborate dance routines on the Jumbotron at various sporting events.

"We were famous Jumobtron dancers," Fallon explained during Swift's Tuesday night Tonight Show appearance, with Swift adding: "We used to go to the sporting events in New York and just really give it our all."
Check out the two having an elaborate dance-off, below.
From the same chat, Swift and Fallon continued to cement their BFF status by playing a little game: They each attempted to draw the other one without looking down at their paper. Swift manages to find yet another thing she's great at, while Fallon? He should probably should stick to hosting.