"Let me stop" is one of the few actual phrases on Urban Dictionary that is slang. Though the exact origin of the phrase is unknown, like with many, it is often used here in New York.
It is usually used by one who is doing OR saying something that can be considered:
Overdoing it
Ridiculous
or perhaps going to far (as a previous definition suggested).
Tyrone: "That girl you talk to looks good, I should holla at her."
Shaniqua: "What? Did you see that girl's weave?"
Tyrone: "That's her real hair, ain't it?"
Shaniqua: "Please, that bitch is bald. And her hair, that shit is fake. Nah, let me stop."
Shaniqua realizes that she's saying too much, whether funny or not, and because of this... she uses the phrase "Let me stop" at the end of her statement. Shaniqua needs to stop getting out of line.
Joe: "Hey Bryant, fresh cakes! Michael is doing the fappy face right behind you!"
Bryant; "Is that right Joseph? Then I guess you should... let me stop in my tracks! *thrusts arm back and hits Michael in the face*
Michael: Not now Bryant...
You use this phrase when someone repeats a story over and over or if a person is just spouting bull shit. Instead of saying "You're full of it.", you can say (in a sarcastic tone) "Well....stop the world and let me off".
It's also an appropriate response to a big surprise.
A relationship between two people who are equally as cool as each other. They are as individually awesome and fun to be around as they are when they are together.
Neither one depends on the other for their feelings of self worth- they know in their heart that they are just as valuable to the world as the other. Good looking, optimistic, and sparks a light in the world that people recognize that goes beyond a normal relationship.
In a powercouple, if one person is flawed, the other person makes up for their weaknesses in strength. Together they are the epitome of what anyone would desire in a relationship. They encourage goodness in the world and make it a better place by being together.
I'm a fan of those two, they are such a power couple, the epitome of what anyone would want in a relationship.
I am envious of them because they are a power couple.