Lukewarm Charlie -
When lying down with your partner, their head is on your lap, but more so in between your legs rather than on them. You discretely fart, but with enough force that they feel it against their face and get a lukewarm sensation.
Depending on the outcome, especially if he/she isn't discusted, the Lukewarm Charlie is the prelude for a Hot Carl.
Frankie: "Hey, how do you ask if a girl is into hot Carls, without freaking her out?"

Tim: "Give her a Lukewarm Charlie first, if she's into it she won't be discusted."
by Jamesleeharrington October 13, 2013
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