a term of endearment used to describe a loved one who is acting less than normal.
friends who like to act goofy around me are described by me as silly heads.
by BNM June 10, 2006
1 more definition
We wrote "SHITHEAD" on the door, then rubbed part of the word out. It ended up looking like "SILLYHEAD".
by Dan Teh Man July 01, 2004