Shuckle

A goofy or comical event that is obvious to most. It is almost like an interjection (Oh! I didn’t know that, Gee, that’s crazy, What! How could you say that, oh, gee and what are the interjections) but on the backend of a sentence. Almost like an extra word

“Didn’t you know that you cannot put water on a grease fire, shuckle?