If you are referring to the song right at the beginning where Deadpool is sitting on the bridge and drawing, its called Shoop! https://www.youtube.com/watch?v=4vaN01VLYSQ Thats the one. read more
Deadpool, Colossus and Negasonic Teenage Warhead take a taxi to the shipyard; Deadpool advises Dopinder on how to win back Geeta. read more