What directors say when they have a bad script, but want to make 10 year olds go wild with excitement, a tactic made famous by Alvin and the Chipmunks and the youtube user Fred (coincidentally both are horrible). All you need to do is alter the pitch, and bingo!

The act of watching numerous recorded university lectures at 2x speed in a futile attempt to cover an entire semesters material the day before the final exam.

When you deep throat so deep that you stick a ball in each cheek.

1 (n): a small rodent, similar in shape to a squirrel, characterized by the black and white stripes on its back. Often seen on rock walls and, sometimes, playing games with cars in the middle of the road. Sometimes it loses. See pancake.

When a woman felates a man to the base of his penis and then puts his balls in the sides of her cheeks as if a chipmunk has filled its mouth completely with nuts. Source: FenixDanee

During a blowjob, a female may be able to deepthroat a man's cock. Truly experienced ladies can also engulf the balls into their mouth, causing them to have the appearance of a chipmunk storing nuts in the cheeks.

Chipmunking.. In the porn world, It’s when the guy pushes his stiff cock into your cheek hard from the inside out, creating the classic “chipmunk face” with bulging cheek. Now a true chipmunking purist will point out that the cock must be pushing so hard that there is a discernable dick head outline showing thru her tightly strained cheek..