Skipping works.
Jump...with the rope...
Jump Skipping
trampoline
Basically it works you calves, quads and your abdomen muscles. Working these muscles help you jump higher, therefore you will be able to dunk if you can jump high enough
Clutch could be skipping
up up
Pizza
yes it does
Yes they make you lighter which puts less gravitational pull on yourself allowing you to jump higher
It jiggles or bends a bit.
Lose some weight :)