La la la la
When you say it to cheer someone on like a dumb team chant, or when someone says Febreeze and you all yell it like a stupid ad.
My friend fell off his bike, and we all started lalalalala like a stupid team.
My class said Febreeze, and we all yelled lalalalala like it was a commercial.
My brother won the game, and we all did lalalalala like we were in a stupid ad.