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.
No. There's no reason why they would.Of course there's no reason they couldn't if the writers thought a Phineas & Ferb gag would be funny.
gag
It stands for "Gag Box"
Gag
probably Over The Nose gag..
It is poo
Sharks have no gag reflex.
You die
The term gag factor refers to the gag reflexes. For example, a baby has very sensitive gag reflexes so even small amounts of food may cause the baby to gag.
First a tight cleave gag, two a handkerchief in front of the first gag, three some tape and four an over the mouth gag. Nice and quiet.
There are some dangers when using a ball gag. Ball gags can be pretty rough on the jaw. Two major concerns when purchasing a ball gag are the material of the ball gag and the size of the ball gag.
probably the vacum lure gag