When the guy with his master's who's job you were told you weren't qualified for performed the following all in one query:
1. A massive many to many join on a 4 million row table.....to itself on in inner query through a linked server.
2. Decides to try and join this massive inner query (see step 1) to another table on a second many to many join.
3. Writes a function for month. Yes instead of month(literallyadate)

Then this guy emails me to ask if I can optimize it because we yelled at him for trying to insert 216 GB of data into a table (again on a massive many to many joined disaster). We told him if a query was taking more than 40 minutes we needed to see it.

I regret saying that now...should have just bought more space ;)