Just catching up on this thread after a holiday. Some really funny ones, lots of memory joggers and many I've not heard before.
Here are some I remember (don't think they've been posted before).
- describing someone as "neither use nor ornament" (self-explanatory I think).
- "I did'nae come down the Clyde on a bike" (my Scottish mother-in-law used this a lot)
- "as fit as a shunter's tom-cat" (presumably a variation on butcher's dog)
- "they've done a flit" (moved house, usually quickly)
- "it's neither nowt nor summat"
Malcolm