Cubs reliever Justin Grimm answered questions for fans on Twitter yesterday. This is my favorite one...
Q: What's the funniest thing you've heard being heckled while warming up at an opposing stadium? #askgrimm
JG: There's a lot of them but some random fan once screamed at me to "quit hooking up with his sister" while I was warming up. It made me turn around. I almost never do that while warming. It was hilarious and I was like "I don't know this kid or his sister" but he got my attention. It was funny after the fact because he screamed something crazy and random, plus you never know back in the day or whatever. So I looked.