What does Big girls don't cry mean?

Big girls don't cry meaning in Urban Dictionary

An annoying track by Fergie.And it is not like the woman first three singles (London Bridge, Fergalicious, attractive), of supposed to be irritating and remain in your mind from day to night. This track is truly quite mellow and kinda country-sounding, yet it still somehow has the ability to be stuck in your thoughts from day to night.