Used when a person wants to do something to another person (usually sexual or at least somewhat physical). It is used in a vague way to allow the listener to guess what the speaker is implying.

a treat sold at mcdonalds for $1.49 made by 2 hobos cumming into a cup and freezing it and letting little children eat it with butterfingers

McFlurry: the act of defecating on ones chest, then rubbing assorted Mn'Ms into it

Ain't that icecream yo?

When you ejaculate into someone during anal sex, and after you pull out they fart on you.

A whale's vagina.

The act of tunneling an ice cream sandwich in your ass, then having a sexual partner felch, or suck it out with a straw.

The McFlurry is a pre/post-sentence appendage (written or verbal) used in colloquial arbitration and debate to confer confidence in one’s statements and invoke a lighthearted challenge with a friendly inconsequential wager - a McDonald's McFlurry. Direct translation of a "McFlurried" statement may read, “I bet you a McFlurry that (insert sentence).”

It should be noted that reconciliary collection of owed McFlurries is often not practiced amongst friends.

It should also be noted that challenges capitalized by a McFlurry do not always have to be measurable and are often subjective in nature (see example 3).