Diddly squat informal pronoun
This expression means anything.
I know diddly-squat about her family.
Jane didn't care diddly-squat about what his parents said.
This phrase is a derisive answer to an inappropriate, unreasonable, or stupid question
Whatever you mention, someone will get it.
Rainy, wet weather
It has been raining for hours, it is the season of lovely weather for ducks after all.