A loud cross between a scream, a moan and a groan commonly vocalised by the retarded.  Not known to have any actualy meaning but could be a possible attempt at speech.
Retard:  NMMMMMMMUUGH!!!!
Person 1: WTF that was some tardscream!
Person 2: I wonder if it was supposed to mean anything.
Person 1: WTF that was some tardscream!
Person 2: I wonder if it was supposed to mean anything.
by RabD February 3, 2007
 Get the tardscreammug.
Get the tardscreammug.