Giant Bull Share definition Flag A man who is at least 6 foot 3 inch tall. Bodybuilder/Very Muscular. Cock 9 inch plus. Sexually adventurous. my boyfriend is great, he's a giant bull, I love a huge powerful man. Giant Bull by byxpereanz January 18, 2011 0 0 Get merch Get the Giant Bull mug. Buy Now — $32.95 See more merch