"I'm one card short of a full deck
I'm not quite the shilling
One wave short of a shipwreck
I'm not at my usual top billing"
Everyone has their own little canned sayings that they use in certain circumstances. One of mine, for when it's apparent that I've not thought everything through, is "I may be slow, but I make mistakes."
I had caught myself about to say it on IRC, and was curious to see if anyone else had this utterence recorded. In particular, the person I picked it up from - Bill Sears, one of my compadres at Rose-Hulman.
Bill, wherever you are, you've a legacy.