We all know what junk food is. And we know what happens to us when we make a steady diet of it. Junk sex is like junk food – not bad enough to avoid, but definitely not good enough to make a steady diet of. The effects of junk sex include outbreaks of unhealthy relationships and a malnourished emotional life, and self-destructive behavior like spending waaaay too much time at the gym. In addition to physical symptoms such as irritability, pain, and sexually-transmitted diseases. Junk sex, particularly media-induced junk sex, leads to a vicious cycle of empty sexual encounters and soul-sucking loneliness, and the obsessive preoccupation with our skin. No hard-and-fast definition (pardon the pun) can nail down the exact occurrence of junk sex, but it is very real and each person must define it for themselves.

(noun) A successful type of theft which results in an acceptable, impressive and rewarding payday for the protagonist.

Sex with a prostitute that will almost certainly result in a venereal disease, and the pleasure in doing so.