not being funny but

UK way of letting someone know you're about to say something that might sound weird or insulting, and you mean it.

Also used to display general impatience/frustration.

Not being funny but I'd rather eat my own lips off than go out with you.

Not being funny but is this going to take all night?

Mr being edgy is funny

Used almost only in referring to user @EJimmyTheTbji

Look at Mr being edgy is funny over there

Not being funny

This Failure of a speech, I'm sorry for putting you all through this.

John: I'm sorry for not being funny, I tried my best