My best clumsy story (or worst).
Nice bungy with conny plus two lovely Burmese style fancy flowerpot/planters each side of the door each on a little stand.
I had just gone wfp and was having "great fun" with hose control etc and I pulled one over and it broke in several bits and deposited potting compost and flowers on the patio.
I ring door bell - custy is good about it and says he has a spare in the shed and I offer the clean (£20) for free and carry on.
No sooner had he gone in and shut the door but I pulled the other planter over and did the same again! Custy has that "shocked" emoticon look and it was going to go either way but he burst out laughing at the absurdity of it all and got another two free cleans out of it!
£60 in work that cost me - never had a "clumsy" like that since - except when I stepped back into a fishpond up to my thigh but thankfully didn't fall over or break anything! 
I broke a £200 garden table once that I paid for.
She cancelled a week later.
That's the way it can go though.