be as dull as dishwater

be as dull as dishwater

To be very boring or unexciting. This phrase is often used to describe a person. My date with Dave was not great—he is as dull as dishwater. I fell asleep during that movie because it was as dull as dishwater.
See also: dishwater, dull
Farlex Dictionary of Idioms.
See also:
  • (as) dull as dishwater
  • as dull as dishwater
  • dishwater
  • dull
  • dull as dishwater
  • dull as ditchwater
  • ditch
  • ditchwater
  • (as) dull as ditchwater
  • be like watching grass grow
References in periodicals archive
Get real, Martina, women's tennis needs a bit of glamour or it would be as dull as dishwater.
Tennis: Wimbledon 2003: Navratilova goes potty over totty; Strawberries, cream and crumpet
And while the mighty Reds of 2001 can be as dull as dishwater. You have to feel for those forced to commentate on Liverpool.
Sport on TV: pick of the day