Does anyone else have that one friend who insists on grabbing the check from the waiter? He hides it like it's a top secret document, then tells everyone what they owe. You throw in your share and then inevitably he lets his guard down and someone grabs the check from him and realizes he's asked everyone for $3-4 to little and this was going to come out of the servers tip portion of the bill. For the life of me I can never understand why people who can't figure out what 20-25% is, grab the bill.
I know it's a silly question, but it always seems like the mathematically challenged person in the group always grabs the bill.