Sexual DictionaryDictionary of the F-Word

be at number one:

The first day of a woman's monthly flow. Number one also refers to the act of urination .
See Also: 1-2-1, 900 number, abnormal forms, abortion rate, be at number one, Cogito, ergo sum, double, hot item, number one, number three, number two, P/P, seven digits, sex number, sexy number, skainsmate, trap two, triskaidekaphile

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