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1.
Bottom part of your upper arm. the part that jiggles when you wave "hey baby" to someone.
"i had to return that sweater the other day because it constricted my heybabies.
by PPandaa January 31, 2010
 
2.
This means like hey whats up in a excited voice.
Girl1:Hey baby!
Girl: Hey!
by Kanessa13 March 07, 2012