I recently saw a friend I had not seen for some time. This friend was sitting in a cafe, so I could not see them properly. I asked them how they were and they told me they were pregnant and baby is due in October. Without thinking I said wow, that's brilliant news, do you mean this October? She just looked at me and relied "No, Kermit next October, it's a 20 month pregnancy!" I felt such an idiot. Please share your own brain fart moments.