Duke and Fez are referring to Live Oaks, which have a tendency to rot in the middle and fall over on your house and car with little to no warning. They also grow like weeds, they are a pain in the ass to remove and the stumps keep growing back over and over, they're pretty though. I personally like either the dogwood or Magnolia tree. I have somewhat of an affinity for the Palmetto but they aren't always popular.
Yeah. Actually, Elon means oak tree in Hebrew and the campus is loaded with them. It's a huge part of the school.