1. One flips the BibleBird (similar to flipping the bird or The Bird) at someone by extending their index finger in an extended horizontal position, pointing at their intended victim while uttering the phrase, "I'll pray fer yew!"
2. ONLINE -- When losing an argument or feeling in danger of losing an argument online, declare your opponent as being overly angry and then type, "I'll pray fer yew!" and immediately post.
MEANING = Derogatory and Offensive Gesture:
The flipper of the BibleBird has just passed judgement upon their victim and has declared that victim to be either eternally damned to Hell, or in grave danger of being eternally damned to Hell (as defined by the flipper's perception of their own purported Christian religion).
"I think your ideas are full of manure/crap/shit/etc. I'LL PRAY FER YEW!" (you have been flipped the BibleBird)
"You must be one of them Liberals. I'LL PRAY FER YEW!" (you have been flipped the BibleBird)
"What do you mean you're an agnostic? I'LL PRAY FER YEW!" (you have been flipped the BibleBird)