A person as dumb as a sack of potatoes.

1. A potato

2. A boy who has not hit puberty.

3. A follower of the new wave band Devo. Used almost exclusively among fans

Affectionate term for a baby or small child. The history of this phrase is lost in the mists of time but possibly stems from the slang term for potato. Two children may be referred to as Spud and Spud junior.

upon greeting a friend, a fist is stuck out and thses fists touch resembling a mutual appreciation of eachother. the fist is said to resembe a spud.

A particularly inneffective person, thing or action. Usually in the sporting arena but can be used for a variety of professions.

A hole in a sock. This is due to the appearance of the foot through that hole being likened to that of a potato. Most noticeable with heavy contrasts of skin colour to sock colour. This may well be a south of Britain colloquial term, but this hasn't been firmly established.