argggh, the tit for tat! I have that ALL the time with H. And he will say it's ME who "keeps score". Most infuriating. And childish. And you know, if they just left that little bit out about 'b/c I did it last time'... we'd probably have a much kinder disposition about the request (or order, which it sometimes resembles more...)
When the men on the chessboard Get up and tell you where to go; And you've just had some kind of mushroom And your mind is moving slow; Go ask Alice... I think she'll know.