Jimmy Fallon had a special guest drop by on Tuesday's Tonight Show: his buddy Justin Timberlake!
The frequent comedy collaborators brought back the "Camp Winnipesaukee" sketch, which was introduced when Jimmy was host of Late Night, and has the two pretending to be their younger selves. Wearing braces, terrible wigs and blatantly ignoring their summer-camp curfew, the duo celebrate with off-key renditions of popular '90s songs.
VIDEO: 10-Year-Old Fan Makes Justin Timberlake Cry at Concert
After covering Hootie and the Blowfish's "Only Want to Be With You" and Toto's "Africa" in 2013, Justin and Jimmy tackled Third Eye Blind's 1998 hit "Jumper" following a game of Truth or Dare ("Is it weird that it's just two guys?" Justin asks).
We learn a lot – and I mean, a lot – about their '90s thoughts, from their crushes (Kimmy Gibbler from Full House!) and junk-food vices (Pop Rocks!) to how Jimmy really feels about Justin's facial hair.
VIDEO: Is Jessica Biel Pregnant?
Jimmy later tweeted about the bit, which had the two friends in constant giggle fits.
Justin responded, of course.
The 33-year-old singer, who is nearing the end of his 20/20 Experience World Tour, has had a busy few days in New York City. He attended Taylor Swift's star-studded 25th birthday party (wearing a poop emoji mask, no less), performed "Holy Grail" with Jay Z and cried over a young fan -- all in the span of three days!