Lyric discussion by Thxaliaey 

A "Milkshake" is a girl's sensual energy - what makes her stand out from the other girls. Taken more literally, it is about a girl who dances seductively and attracts the attention of boys in the club. Her "milkshake" is the way she shakes her boobs (the source of mother's milk). It can also be taken to mean oral sex. Milkshake, after all, has been slang for “breasts” since the 1910s, evoking the anatomy and physiology of the organs. At first, when the song was initially released in 2003, she said that milkshake is something sensual that makes a woman stand out, even suggesting breasts or butt. Bringing the "boys to the yard" could be about attracting boys like a dog in heat.

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