Lazlo at age 4 scared of a clown nose. That's when it began his fear of clowns.
Clown Camp is the 52b episode of the semi-finale season.There is A RANDOM GUY BEHIND YOU OMG!
plot
It's Clown Day at Camp Kidney and everybody is celebrating! Everybody except Lazlo as it turns out, Lazlo had a bad experinece with clowns when he was four and is now scared of them. He doesn't want to be anywhere near them.Unfortunately, the news is about to get a lot worse as Scoutmaster Lumpus decides to make every day Clown Day and to make that possible, every camper has to take a turn being a clown. When it comes to Lazlo's turn, he panics and throws confetti on Scoutmaster Lumpus which turns literally him into a clown! Scoutmaster Lumpus gets angry and ends up on the warpath against him, chasing him all the way up Slapstick Mountain to where the clowns live. As the clowns watch the chase, Lumpus bumps into a rake, and now Scoutmaster Lumpus is accepted into the clown group. Lazlo feels guilty because now Scoutmaster Lumpus is trapped by a bunch of clowns. And although the moose is enjoying his time now, the enjoyment might end once the clowns discover Scoutmaster Lumpus isn't a real clown! Lazlo, Raj, and Clam save Scoutmaster Lumpus from death by clowning when Lazlo tricks all of the clowns into literally squezzing into a literally tiny car.
note
It's learned in this episode that Lazlo is afraid of clowns. when he was young the fake clown drop his clown nose.