If you are a perky person, you are upbeat, lively and positive. A perky friend would be the one who's always up for games and activities and constantly declaring, "Hey guys, this is fun!"
Perky is an adjective traditionally used to describe women or girls, like its synonym bubbly. Perky people tend to have lots of energy. They're always smiling and have a generally cheerful disposition. The enthusiasm of perky can be contagious — soon, you'll also be perky, unless you need a quiet, calm or somber moment. In that case, all that happy chatter can quickly become very annoying.