Answer:
I am free the first time and the second time, but the third time is going to cost you money. What am I?
I am the kind of food monkey likes and people slip on me and fall in cartoons.
I'm a kind of cup that doesn't hold water, but makes a lot of noise repeatedly. What am I?
I go in hard come out soft. Blow me hard and I’ll make a pop.
I give light by night, but not by day. I am wicked but not evil in any way. Wax for the most but always wane; except when I'm out, I stay the same. What am I?
No matter how little or how much you use me, you change me every month.