(adjective) Has many uses, but mainly refers to the presence of an awkward jilted former lover who stains the aura of an otherwise perfectly good day.
1.) Elizabeth and Nicole's day soon turned chitty as they realized they were both having lunch next to the strange weird guy they both awkwardly tongued at the last big frat party.
2.) Wow, what a chitty dude, he thinks just by playing beer pong with a girl, that gives him the right to stick his hand in her panties.
3.) Stop being so chitty and standing behind that girl and just ask her to dance already.