I once bumped into this bloke. He said Hi, seems to know me, talks to my daughter like he knows her too. We have a conversation, me wracking my brains the entire time, trying to work out who he is while faking that of course I know him. I recognise him, but fuck knows where from. Eventually come to the conclusion he's a friend of my brother's. We say our goodbyes and as I walk off I say to 6yo DD, "Did you know who that was?". To which she looks at me stupid, and says "Of course, it's Dan!". "Dan?". "Dan! Bampi's Dan!"
Yep, I have just blanked my fucking step brother. Now, in fairness to me, my Mum married my stepdad when I was an adult, so I never lived with him. And also in my defence, I didn't know he was back from travelling in Australia, so wasn't expecting to see him. But still, I've spend Christmases with this guy, I've been to Center Parcs with this guy. He's babysat my kid, and I've looked after him when he was 17 and drunker than any 17yo should ever be. And yet, in that moment, I didn't know him from Adam.
10 years later he's still not let me forget it.