In general: to leave behind one's inhibitions or to behave in a way that is free from social limitations or any code of conduct
Let your hair down and tell me all about yourself. Come on. Let your hair down and tell me what you really think.
by Harald Fairhair January 5, 2012
Get the Let your hair down mug.by andydalton January 29, 2012
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Let your hair down • national let your daughter straighten her hair day • Let Your Nuts Hang • Let your Fingers do the Walking • Let your balls drop • let your caged canary sing • Let Your Child Buy Whatever They Want With Their Own Money Day • let your clutch out • let your freak flag fly • Let Your Hands Go