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It is a termed used as a substitution for saying anything that you are to nervous or afraid to say.
"How do you feel about Ronald" Jessica said
"blahhhh." Pete said
"blah?" Jessica said confused
by Pete man March 10, 2016
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When a decently attractive thot sends progressive thotty pic and u go "BLAHHHH"
Blahhhh- Thot *sends thotty pic*

when trying to finesse hoe for the sexually arousing photographs
via giphy
by finessisists September 19, 2018
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