Are you a pocket checker? I am not. I absolutely refuse to check pockets. #1 because I am lazy and I find checking pockets tedious, #2, I don't relish getting lint and grit under my finger nails and lord knows what I might find and #3, my husband is a grown man and so should be fully capable of checking and emptying his own pockets BEFORE he throws it in the hamper.
So... when your wife finds three long screws in the bottom of the washing machine let's just hope that there weren't four and that it's not damaging the insides in some hideous way. That if the washing machine does break down, it will in no way be the wife's fault.
Just remember ladies, the more you do the more he will LET you do.