Chortles

[Sarah]

Noun: Not quite pants, not quite shorts, only for men, only is beige.
Noun: The type of laughter that is silent then turns into a series of grunts.
This originated in Minneapolis, a group of kids wore the same set of shorts/pants everyday, and always made this kid laugh the same kind of way. Thus, his laugh matched the sound Chortle and Chortle acurately described the pant/shorts.

[Little_Girl]

to laugh, showing pleasure and satisfaction: