A con-goer who is extremely attractive but is lacking in the areas required for an on-going relationship. Used for flirting, showing off, and possibly sex at the convention only. You may use the same convention lollipop over several years. Similar to arm candy.
Also known as "con-down". The feeling of sadness you get after a convention is over. What type of convention is irrelevant, as long as it is a group of like-minded people that you feel like you belong to.
Can also be used to describe the feeling of loneliness after having spent time with a partner, especially in a long distance relationship.
Person 1: Aww man, I wish that convention lasted longer...
Person 2: Dude, you have convention-down.
---
Significant other: I had really bad con-down for a week after my girlfriend flew back home. Especially because we won't be able to see each other for two months.