Sunny days! Jimmy Fallon and the characters of Sesame Street photobombed little kids in an adorable new video that aired on The Tonight Show on Thursday, January 14.

Fallon kicked off the mischief by explaining to Elmo, Cookie Monster and Abby what exactly they were planning at 30 Rock in NYC.

"A photobomb is when someone takes a picture and we jump up in the background and surprise them," he said to the inquisitive trio. "And they don't know that we're there until they see it on their phone."

Also joining the fun were Big Bird, Count von Count and Ernie. In the clip, the characters and Fallon hide behind a makeshift brick wall as unsuspecting kids and parents pose for photos. Meanwhile, the troublemakers use clever props including a double hoagie, "quintuple hoagie" and, for Cookie Monster, a "double cookie," to spruce up the backgrounds of the portraits.

The video reaches new levels of cuteness once each kid discovers that the Sesame Street gang was there all along! Watch the magic moment above.

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