1 definition by that girl next door

To describe a person who is Fantastic, they are fun to be with,and are hillarious when drunk! Make great jokes, has a good taste in music and clothes, they are also very pretty, a genzie is pure sex. This person would be a brilliant friend or girl/boy friend, however it is normally used to describe a girl.
Wow, shes well genzie!!!

God, that girl last night was proper Genzie!
by that girl next door October 1, 2006
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