A very nice person who usually has a very dark sense of humor. He usually isn't there when you need him, but he will be there at times you don't. Corndawgg's usually make sure everyone is having fun.
Girl1: Hey did you see Corndawgg
Girl2: Yeah, he really cheered up the party.
Someone who jumps from one relationship immediately into another one.
Serial monogamists can not stand to be alone and often suffer from vast commitment and insecurity issues.
Because they jump into relationships immediately after the previous one has ended, serial monogamists typically don't take the time to reflect on their behavior or why their previous relationships failed; thus, they end up making the same relationship mistakes over and over again.
Person 1: Damn, Dustin already has a new girlfriend?! It's only been two weeks since he broke up with his fiance! I think he's a sociopath.