PSTFUD Share definition Flag Please Shut The F*ck Up Dudea word similar to STFU and SYBAU. dumm dude: HELLO BOB YOU ARE GAY bob: PSTFUD i am not gay PSTFUD by GGoobyJohnbrit May 13, 2026 0 0 Get merch Get the PSTFUD mug. Buy Now — $32.95 See more merch