I've seen that picture, but I didn't take it as bragging. IMO the poster just thought it was funny how the dog looked, and he just mentioned the cleaning because he thought if he didn't, he'd get hundreds of replies telling him he should've helped the dog instead of laughing at it.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
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