1-Santa Claus's most famous line that he uses as a greeting and
exclamation
2-Can be used to describe how
some people laugh ie very jolly and old-fashioned sounding
3-Can be used as an inslut when you see like 3 people
you don't like and you point at them 1 by 1 and go "ho ho ho"
Ex1-Santa: Ho ho ho!
Merry Christmas!
Ex2-That kinda chubby
looking old man has this ho ho ho happy chuckle to him.
Ex3-Dude, I hate those three popular chicks, talk about ho ho ho.