The sexual urge that drives some old Conservative sex researchers with beards into developing even more multisyllable pesudo-Greek names for sexual activities they and their mothers think are icky.
Paraphilia is what psychological experts call sexual attraction to or arousal from inappropriate activities or inappropiate sex partners. Many of these are illegal if the person acts on his fantasies, such as Pedophilia (sexual attraction to prepubescent children) and Exhibitionism (exposing oneself to a person who did not consent to it). This is in contrast to a Fetish, which is a sexual preoccupation with an inanimate object such as women's panties or shoes.
Dave's paraphila is that he gets aroused when i thinks about a guy blowing him off.
Scientific term of a sexual fantasy/ attraction beyond what society sees as normal. Also known as sexual perversion or deviation. Usually comes from childhood abuse, anti-socialism, depression, etc.