today at lunch:

me: i don't want to go to my one o'clock. they all think i'm stupid.
margaret: no they don't. i'm the one who says stupid things.
me: at least you talk. my class definitely thinks i'm the stupid one.
margaret: oh no, can't be worse than me. i'm definitely the stupid one.
rikita: you know, this is the grad school version of "you're prettier." "no you're prettier."
me: ah, yes.
margaret: right. we need to know people who are not grad students.