eyuppie
When you're gonna say "Yup", but you're a child at heart and can't help adding an "e" and a "pie".
Example:
John:"Did we have Biology homework."
Person that's 14 (2): "Eyuppie."
John: "Shut the fuck up you orange starburst."
John:"Did we have Biology homework."
Person that's 14 (2): "Eyuppie."
John: "Shut the fuck up you orange starburst."