[JSMC]

if ye cannot trad then ye cannot be classed a window cleaner.

[Elfyn]

I hadn't used a squeegee for about 5 years - until today.
I had inside and outside of 2 big shop windows and two big glass doors to do. I thought I'd make a hash of it after so long, but it was like riding a bike - no probs. 

[Window Lickers]

It's just like riding a bike. Once learnt.