Playful, rubbery tone. Yep, it sounds like "oh, boy!" to me.
Writing words about sounds is not a walk in the park.
Tired of listening to lousy arguments.
Haha, laughing my horse ass off out loud!
Do I look silly when I laugh like that?
Beam me up, Scotty! Those little green thingies have some kind of guns.
Unmannerly pointing and laughing at a wimp.