How to make a quick cap or lid from a balloon

Wait, is this a thing some people do?

My mom taught me this when I was 10 because I always misplaced the caps to the spices?

I don't know, did she?

She did lol

Jumpcuts, or maybe it’s sped up.

Or he's a very experienced blower
( ͡° ͜ʖ ͡°)

Yeah, jumpcut