It is poo
It stands for "Gag Box"
There are a number of things that would cause you to gag for no reason. Smoking is one of the main causes as the lungs are affected and are not able to take air as required.
There is no official reason why someone would receive a rock as a wedding present. Perhaps the rock was a gag gift.
Jokes On You
It means to make you sick.
The slang word "gag" can have different meanings depending on the context. It can mean a joke or something funny, as in "That comedian's set was a gag." It can also mean something that is overwhelming or excessive, as in "The amount of work I have to do is such a gag." Additionally, "gag" can refer to a act of forcefully preventing someone from speaking or making noise, often used in the context of comedy or entertainment.
nothing realy
A body gag is sort of slapstick comedy. If you fall down comically or something, that's a body gag. If you slip on a banana peel or whatever, that can be classed as a body gag. It's anything along those lines...
It obviously means that she doesn't have a gag reflex, and how did she show you that with your finger?
Are you sure you don't mean a "GAG order?" A gag order is a judicial directive ordering you not to discuss your case, or anything to do with it, with ANYONE, except your defense attorney.
It is a show with jokes on other people, such as the hidden camera.