Basically- anything can be hazing.... making you do $hit, embarrassing you, making you drink... etc...
The day the guy said that, he sent me to get him a pitcher of beer for him and another bro... I came back with 3.... They said "Wow, 3 pitchers, thanks" I said "FU dude, these two are mine and began chugging on one of em...." The first dude then goes "Damn dude, this pledge is self hazing!"
As far as the drinking and doing shit, I guess you could say I was not really "hazed" because I liked it, it was more like putting in requests...
I think somewhere there should be an exclusion for sick pledges who think that stuff is fun...