A putting of a whole object in one's mouth all at once (as a whole egg, banana, cookie, etc.).
If a person is greedy, he will put a whole banana in his mouth at once.
To put all of s.t. in one's mouth at once (as a whole cookie, a whole fruit, etc.).
Don't show your greediness by putting a whole egg in your mouth at once.
Have him put this whole banana in his mouth.