What's worse is that there was a little dispute over the final amount (which appears to be resolved now). However, I'm still writing "Endorsement signifies acceptance of payment in full" on the back just in case. Somehow, I feel it may not be taken as seriously written on the back of a talking squid.
In my defense, I'd like to say that I bought these years ago (as if that makes it any better), and I never write checks anymore so I can just never finish them.
...there's really no dignified way to do this, is there?