People who have the same surname and very different jobs; like Wes and John Craven. So you'd have John Craven's New Nightmare, Wes Craven's Newsround. Funny yeah?
How many colds have you had this year?
How many different coloured pens/pencils are within arms reach of you right now?
Shit jokes you're sick of seeing on social media/birthday cards etc. Like the 'leftover wine' one.