I guess similar to baby brain but here are my recent wedding related 'DUHs'...
In work I have to sign and date millions lots of documents and money bags on a daily basis.... Muppet here has been putting the year 2016 on them, because that is the year we are getting married! I see something being advertised for 2014 on the tv, and I think 'ha, they screwed that up'! No they didn't.
Anyone have this happen to them? Called a caterer instead of your mum? Hahahaha!