kastahan Share definition Flag a filipino term used to say that 2 doggs are fucking. oi ano na earl?haaa? kastahan tayo sa pwet?haaa?ano na haaa? kastahan na tayo parang dalwang aso sa may ermita kastahan by maco October 22, 2003 0 0 Get merch Get the kastahan mug. Buy Now — $32.95 See more merch