Yeah, I could. But even then, there aren't that many numbers I automatically know the double of, so... it's just easier for me to look at my card. I really am just mathematically retarded. XD; See, your idea of using 10% and then doubling it would NEVER have occurred to me. Most of the time when I see numbers, it's like my brain goes out for lunch and a drink.
Oh, I was reading a comment you made to someone else, and it sounds like your dad tipped very much like mine does. He's a little better about it now, but back in the day he was always trying to cheat people out of their tips. D: My mom and I would sneak extra bills onto the table when we were about to leave too. (And this was when the service was GOOD. If it was bad, they'd be lucky to get away with no tip. He enjoys yelling. XD;;)
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branchandroot
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Date: 2008-07-06 12:06 am (UTC)Oh, I was reading a comment you made to someone else, and it sounds like your dad tipped very much like mine does. He's a little better about it now, but back in the day he was always trying to cheat people out of their tips. D: My mom and I would sneak extra bills onto the table when we were about to leave too. (And this was when the service was GOOD. If it was bad, they'd be lucky to get away with no tip. He enjoys yelling. XD;;)