Hey, Kalamazoo isn't hicksville! After all, it DOES have pretty much THE medievalist conference in the US (to which I will drag my lazy ass one of these days, I'm sure), which makes it automatically awesome. XD
And yeah, I follow the same strategy you do - 20% across the board, except change at coffeeshops (though there again I do 20% if I use a card).
And I suck at mental math too, but 20% is super-easy for me because 10% is the easiest thing in the world - just take off the last digit and skootch everything over, and then you just double it. So, say your bill is $15.19, then you drop off the last digit so it's $1.51 - 10% - and then double it, so the final tip is $3.02).
no subject
And yeah, I follow the same strategy you do - 20% across the board, except change at coffeeshops (though there again I do 20% if I use a card).
And I suck at mental math too, but 20% is super-easy for me because 10% is the easiest thing in the world - just take off the last digit and skootch everything over, and then you just double it. So, say your bill is $15.19, then you drop off the last digit so it's $1.51 - 10% - and then double it, so the final tip is $3.02).