Someone who is very comfortable with physical affection (think Abby Scuito from NCIS) and is not afraid to be bold in initiating it, especially with their significant other.
There are 10 stalls in a restroom, all are empty, except the one you are in. Another person comes in, surveys the situation, decides to shit in the stall right next to you. Only 2 possible reasons. They want to smell your shit vapors and/or want you to smell theirs.
I ran into a poo snuggler at work twice this week. The smell was beyond rancid. I want to scream "Why are you shitting next to me when there are 9 other stalls open!!?"
Someone who has been known to go to Rumors and within the last 5 minutes of being there finds a guy with a blowout to take her to IHOP and then snuggle with.
A sniggler is someone who takes the parking spot you wanted, or who otherwise does something perfectly legitimate, but which nonetheless inconveniences or annoys you.
A condition under which an shared space can operate between friends.
Under "Snuggler's Delight" law, snugglers will get priority for seating in a shared entertainment scenario, and will maintain the ability to snuggle off somewhere else during the activity without seeming rude. All delight must by default be accepted.
Snugglers : "We might start the movie in the living room, and head into the bedroom later on. We're both pretty tired"
Non-snuggler: "No problem, this apartment runs under "Snuggler's Delight" rules.