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itssss a street wisedd version of 'Hot Damn' which also could mean 'god damn' or 'omg'
Mr Green; HOT DAYUM! thats a sweet ass!
Girl with sweet ass: say whaaat?

orrrr :)

Mr Green: HOT DAYUM! i dropped the pepper sauce
Mr Fletcher: oh noes!
by mrs pepper sauce May 28, 2009
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