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
References in periodicals archive ?
Get real, Martina, women's tennis needs a bit of glamour or it would be as dull as dishwater.
Washing up may be as dull as dishwater, but drying up will never be boring again (come on, work with us on this) with these fabulously tacky tea towels from Kitschen Sync, those purveyors of all things kitsch for the home (020-8772 1609 for mail-order).
And while the mighty Reds of 2001 can be as dull as dishwater.