Peninni Share definition Flag When a man is so fat he has an inverted penis... You have to push around it to make it pop out.Pronounced puh ninn ee I thought he might be a transvestie until I realized he just had a serious peninni!!! Peninni by CFDKP December 7, 2012 0 0 Get merch Get the Peninni mug. Buy Now — $32.95 See more merch