Watch Fallon, the Roots and Lonely Island perform ‘YOLO’

Jimmy Fallon might be a brand new dad, but that doesn’t mean he’s given up on the fun.

Thursday on “Late Night,� the host teamed up with his house band the Roots and Andy Samberg’s hip-hop comedy trio the Lonely Island for a surprise performance of “YOLO.�

The song is an ironically titled ode to playing it safe -- by cooking meat thoroughly, avoiding lice-ridden children and always wearing (and double-locking) your chastity belt.

Because, after all, you only live once. Why not be careful?

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