Think Christmas crackerjokes but, if possible, worse.
Times, Sunday Times (2016)
They may seem silly, but getting the tone of the crackerjoke right is a surprisingly serious business.
Times, Sunday Times (2013)
That's funnier than the funniest Xmas crackerjoke in history.
The Sun (2010)
Seerude joke
Definition of 'cracker'
cracker
(krækəʳ)Explore 'cracker' in the dictionary
countable noun
A cracker is a hollow cardboard tube covered with coloured paper. Crackers make a loud noise when they are pulled apart and usually contain a small toy and a paper hat. In Britain they are used mainly at Christmas.