pack your own parachute
When you’re the kind of idiot who thinks putting a condom on yourself is the same as flying.
My gym teacher said I was packing my own parachute when I tried to do pull-ups with a banana in my pants.
My cousin got sent to the principal's office for trying to pack his own parachute during lunch.
My dog tried to pack his own parachute, and now he’s covered in glitter and regret.