Someone once posted a scenario on here that highlights the obsurdity of tipping your hunting guide (it might have been huntinstuff, but I don't remember for sure).
(Also, this isn't a direct quote, just from memory)
"That was a great guided hunt, thank you. Now how much do I owe you for this guided hunt?"
"That will be "x" Dollars."
"Great, here is "x" Dollars"
"F you A hole"