In order to correctly perform the sex move "The Comet", participants have to engage in sex on a balcony above a pool. The male partner has to convince his female partner that it would be really sexy to have gasoline all over her body, and during orgasm, he proceeds to light the gasoline (and subsequentally her body) on fire and push her off the balcony into the pool, making her look like a comet on the way down.

Adjective for something that definitely wasn't lame, but not quite "hot". In other words, slightly below being hot, therefore warm, like a nice pair of mittens.