I'll start.

really really really dislike the only childness smuggness of the word 'Yay!'

as in...

I got my Truck ticket. Yay!
I'm going to a Grime Night at Tatty Bogles Yay!
I've got Alzheimers. Yay!
My name is Colin and I've just signed PWL, The Fog Band AND the Faculty. Yay!