be as dull as ditchwaterbe as dull as dishwater/ditchwater
informal to be very boring.
He loved the book but I thought it was as dull as ditchwater.
(redirected from be as dull as ditchwater)
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.