Bitch shut the fuck up! (mostly instant messengers)
On Aol instant messenger, some ho ims you and shes annoying you, you say BSTFU (BITCH SHUT THE FUCK UP!)
by Special Steve! November 6, 2005
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The urban meaning of bstfu is bitch shut the fuck up
Bstfu or i’ll shoot you ass
by SubaruTrissi February 14, 2018
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