When you are singing a song and you are so drunk that instead of saying actual words all you can say is HAMAYEAH.
The other night we were so drunk driving around and Rihanna's "Drink to That" came on. All we could muster was dumbly screaming HAMAAYEAHH! out the windows and people called the cops on us. Then we ran from the cops still screaming HAMAYEAHHH!