Dedicated to @MoonWarriorAtHeart.

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Me: Have a fun time at your chess club!

Grandpa: Have gun at school!

Me: Umm... I'm not really in to killing ppl and breaking rules, but ok. 

Grandpa: ???

Grandpa: Oh, I meant have a fun day at school. 

Grandpa: What does "ppl" mean?

Me:...