eli5 – why does tapping the top of a pop can make it fizz less? Or is that just a myth I’ve been practicing for 30+ years?

Question

What the title says. Pop means soda btw.

In: 1560

Answer 1

Coworker did this. Always tapped his can before drinking. Swore it helped. One day I Shaked a can for a minute. Gave it 3 taps and opened it. Guess what? Half the can fizzed on the floor. Don’t tap the top, it’s pointless. Flick the sides or wait a bit.
Coworker didn’t always tap the can afterwards. Force of habit.