1. when one uses up all their charm to get something, then asks for a little bit more.
2. when someone of the younger elk gives the big lip to an older work mate
1. 'Daddy can i have some cash for the shops?' give her the cash, she then says 'what about the busfare?' tell her mother later she's got more cheek than a baboon's arse

2.see that young lenny borrowed my 13 millie without asking, more cheek than a baboon's arse
by McBoyd October 16, 2007
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