laugh yourself silly

laugh (oneself) silly

To laugh extensively, perhaps to a point of giddiness. I love getting together with my childhood friends because we always seem to laugh ourselves silly.See also: laugh, silly

laugh yourself silly (or sick)

laugh uncontrollably or for a long time.See also: laugh, silly

— yourself silly

be unable to act rationally because of doing something to excess. 1998 Time Out N.Y. Drink yourself silly at the long bar or chow down at the large tables in the back. See also: silly