When you get to know a band's music well enough that you want to know more about the actual band. Sources include anything you'll find doing a Google search.
Matt: I'm really digging Minus the Bear. I wanted to know where they got their name so I did some Band Homework on the Wikipedia machine and found out...
Dude: Yeah, found out what?
Matt: Hmmm, I forgot. Need to do more Band Homework. I never was good at learning.
A clever way of saying that you're going to or you already did bullshit your way through an assignment, project, etc.
Matt: I had a philosophy test yesterday and I didn't read one page.
Javi: Damn dude, what did you do?
Matt: I don't know, but I can say that bulls do hit.
When you're incredibly happy about something.
So happy in fact, that your enthusiasm could easily be perceived by others as you being gay for said object of affection.
Butt happy is the antithesis of being butt hurt
Mikey was all butt happy when he heard that Tool was playing a show in downtown Austin.