Moopin

When your boobs sags 3cm below the start of your boob without support, also defined as "when your boobs sag low and they wobble to and thro.

Betty White's tits are moopin hard.

by Saggage September 16, 2012

Moopins disease

Moopins disease is a disease which results in loud, random, often unexpected outbursts that cannot be explained by any normal behavioural patterns.

Dude 1: What was that?
Dude 2: It’s ok, she has Moopins disease, she can’t control it.

by shelbsy February 24, 2021