This is a
professional wrestling term for, as the name suggests, generating a response (
heat) from the
crowd in a
cheap fashion.
Common methods for a
babyface include mentioning and sucking up to the town they're in, mentioning other
babyface wrestlers, escaping
submission moves at the last second, and making up ridiculous
catchphrases.
Common methods for a
heel include insulting the town they're in, making fun of the local
sports teams,
stalling during a match,
preaching conservative values, and interfering in other people's matches.
The "cheap" really doesn't imply that the wrestler is
cheating by using these methods, only that these things are done so frequently that the
audience is trained to automatically respond to them in the correct fashion.