similar in origin to 'choad
', however this variation means a penis that has a bellend that is several times wider than the shaft. This results in a curved, dome-like penis that rather resembles a giant red mushroom, or in some flatter cases, a medieval shield. Use as such however, is certainly not recommended, however tempting it may seem.
Also used as a term of abuse.
"Ouch, God damn it, he shot an arrow right into my doad! It was a bad idea using it as a shield!"
"You can be a right doad sometimes Chris."