Looking for something to put as smile on your face? Look no further.

The boy in blue in this video simply can't stop laughing during his music class. It's always a mystery to try and figure out what makes kids laugh. After all, these are the pint-sized people who tend to crack up when you say "fart" and "booger," but they're also the ones who may struggle to keep a straight face when you give them a spoon or tell them you're 35 years old.

In this instance, the boy is way beyond amused when the teacher starts and stops playing the guitar and then speeds up again. It's safe to say this teacher is killing with this material.

Whatever it is that's making the boy LOL, one thing is sure: you can't watch this and not feel warm and fuzzy because happiness may very well be contagious.