1 definition by ilybabe12

a girl who you should love forever she'll always be faithful and a outgoing girl. she might seem shy at first and unassuming but once you get to know her she'll give you love and lust. mckenna's are really good at sex. sometimes they are skanky.
Jim: have you heard about that girl who went out with joe?

Sam: yeah she's such a mckenna.

Jim: I know I wanna bang her.
by ilybabe12 July 11, 2008
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