On accident
I kind of can’t take people seriously when they say On accident, I don’t know or care if its more or less grammatical, it sounds like a child sputtering in my mind. It should be By accident or accidentally
Tummy
Any adult has zero business saying this lol
That is not an opinion though. It is an hypothesis. One that you have enough evidence for to act as if it is true, but not enough evidence to consider it a clear fact.