I'll make your week even more Duncan....
We actually set off on Grand Wall the afternoon after doing Cobra Crack that lunchtime. Buoyed up on the youthful keenness of having "sent" we decided that beating Honnold and (I think) Stanhope's speed record would be a great cap to the day. We read the topo in the car and tried to memorise and then set up simul climbing with the aim of doing in blocks of 3 pitches. No idea why, but it seemed like what the cool kids would do.
I forgot how many pitches there were at the start and ended up going too far and ran out of gear to make a belay. Pete then did his next block and got lost and had to reverse half of it. We finally got quite close to the top just before darkness to realise it was pissing with rain and we had no head torches. I said it was probably better to descend rather than die and we committed to the unknown abseil route on a short single which didn't link any of the belays when doubled. It got epic and slow and cold and scary.
Our friends came out looking for us as they were worried and we could hear people shouting up at us from the base. I think we never replied as we were too embarrassed to admit what had gone wrong!
Funny day. Good memories :-)