Sensitivity training apparently doesn't cover the fatties.

Female day camp counsellor: We lost that one kid for a bit yesterday -- you know, the fat kid? He'd wandered off to the Pit Stop.
Male day camp counsellor: Hey, fat kids need their candy.
Female day camp counsellor: That's mean.
Male day camp counsellor: Yeah, it is.
(They both start laughing.)

-- Somerville House