Very uncommon name originating from England. People who come from the Dagnall family usually have a large penis, approximately 11-14 inches long, and are liked by anyone. Girls can't contain themselves around a Dagnall boy, for his large penis acts as a magnet attracted to vagina so his magnet penis ends up splitting the girls in two like a piece of wood. But this causes a lot of pleasure for the women and they don't mind sacrificing splitting their vagina for a shag with the Dagnall's huge shlong.
Look at Dagnall dragging his shlong across the ground again. I wish i was like Dagnall.