5 Seconds of Summer Hashtags:, Fall Songs

In honor of fall arriving, Jimmy gets help from 5 Seconds of Summer to sing his favorite tweets with the hashtag, FallSongs. Subscribe NOW to The Tonight Show Starring Jimmy Fallon: Watch The Tonight Show Starring Jimmy Fallon Weeknights 11:35, 10:35c Get more Jimmy Fallon: Follow Jimmy: Like Jimmy: Get more The Tonight Show Starring Jimmy Fallon: Follow The Tonight Show: