watching

be like watching grass grow (humorous, humorous)

if you say that watching an activity is like watching grass grow, you mean that it is very boring. To watch somebody fly-fishing is like watching grass grow.

See also: grass, grow, like, watch

be like watching paint dry (humorous, humorous)

if you say that watching an activity is like watching paint dry, you mean that it is very boring. To me, watching golf on television is about as interesting as watching paint dry.

See also: dry, like, paint, watch