Had an Indiana douchebag sitting next to us last night. Single seat. Would stand and yell loudly for every basket and after every foul call, and yell at Nebraska fans for (rightly) getting on the refs for missing out of bounds calls.
He didn't come back after halftime. Much better watching experience in the 2nd half.
Also, speaking of douchebags, the Ohio St Big Nut guy sat right behind us (you know who he is, always shown on TV at football games). In the OSU/Illinois game he and his buddy just constantly yelled/complained about the refs. Never gave any credit to Illinois, everything was the refs fault. Between games and at halftimes he would ask people to take selfies with him (their camera, not his) and tell them to post them to social media and tag him.