I've got a mouth big enough to swallow a jet, but I never eat a thing. Spell me one letter wrong and I'll hold your shirts instead.

Once upon a time, there's a cursed man who can only speak 1 word per year. There is this woman he really loves, so he didn't speak for 4 years. 4 years later, the man finally asked the woman: 'Will you marry me?' Unfortunately, the woman told him something worse than no. She asked the man... '______?'

You can do me once but if you do me twice in a row, you're flying. Monkeys use me to steal, thieves use me to flee. The happiest people do me involuntarily. Guess what I am?