We would always get telemarketers calling and since our last name is impossible to pronounce correctly we could always say "oh I'm sorry they don't live here.." but sometimes we'd have fun with it. We would answer, ask them to hold for the person they were calling for, then put it in the middle of the dinner table (don't they have the BEST timing?) and continue with our conversations and usually bring up something about poop because it would make them uncomfortable, they'd yell for my dad and then hang up...hahaaha
My cousin is the best at getting them off topic, once had a 30 minute conversation with a telemarketer about snowboarding...