Note found under table in Chemistry class

Today a friend of mine found a note under his table in chemistry class and we all think that it is hulareous what kind of bad sense of humor some people have. I got the note and will just type it up exactly as it is:

Oooo nunubua i'm seein zzzs above ur head
Lol :) Lol!!! Ya I'm REALLY Tired! I can see them 2 ..... I have 4 eyes remember
Wat i'm confused u dnt hav 4 eyes u hav 2 :-( god nanz even i noe dat

Okay now what does "nunubua" mean? Anybody knows? No? Don't worry neither do I ;-)
For those of you that don't know what "Lol" means: It means "Laught Out Loud"
To have 4 eyes means as much as wearing glasses
and I think "nanz" is a shortcut of a name