It's been a very long time since there was a Marvel/DC Comics crossover, and it could be just as long until we get another. However, some writers and artists do still sneakily throw in some Easter Eggs, but fired Uncanny X-Men writer Scott Lobdell found a unique way of making a dig at his former employer in the pages of Teen Titans #1 back in 2011. When Kid Flash attempts to help evacuate a building which is on fire, he ends up inadvertently blowing it up. That building just so happens to be described as a mansion in Westchester County, a clear reference to Xavier's School for Gifted Youngsters in the exact same place.
