Declaring just this statement may alert the person that you have formed such an opinion and they may need to take a looksy at how they are 'rollin because they may be offending your sensibilities and your just looking out for their back.
Usually used to make people laugh and brink them back to the living and keep it real.
Etymology: Middle English juggen, from Anglo-French juger, from Latin judicare, from judic-, judex judge, from jus right, law + dicere to decide, say
This phrase is effective and understood amongst your peers it is like giving a silent not of agreement.
Should be used in jest to alert your friends to something funny they may have missed and brighten their day.
Especially funny when you say "judged" for something you yourself have done and can be used as a bonding tool.
nb: only works if your friends are thinking the same thing.