The generous spread of chubby fat on the body parts that are not covered with clothing, like in the neck area or calfs/thighs or triceps. Usually associated with obese people. A muffin top can be considered a part of chubbery.
Example : His dad got some serious chubbery surrounding his face. They better work on his diet!
When a guy is turned on, but not quite ready to grab a couch pillow to awkwardly conceal his arousal- an erection that is safe for public consumption- i.e. not pitching a tent, but beginning to feel aroused.
When that girl with that fine ass bent over right in front of me to adjust the spoke nipples on her Fuji bicycle, I chubbed up a bit.
A fat chick. A chubby girl. A plumper. Someone with whom a hogger would go hogging. A girl that a veeter would watch. A veet subject. A chunker.
I hadn't had any good sex in a while so I went to the bar to find a slumpbuster. After striking out with a redhead bagger and a butterface with a nice ass, I found a chubbette at the bar who probably weighed about 180. She had big tits though, so I hit on her.