“Gad, were we ever THAT corny?
I guess we were.”
Your note made me aware of a concept that needs to be expressed verbally and defined. It is analogous to irony, but different.
Corny is silly.
"Irony" is the expression of one's meaning by using language that normally signifies the opposite, typically for humorous or emphatic effect. (from Google.)
They don't SEEM to have anything to do with each other. OPPOSITES, maybe; analogous, don't believe so.