Colleen Green and the Split Split High Five - Special musical guest Colleen Green joins Mary Holland, Kevin Dorff, Horatio Sanz, and Matt Besser for this week's improv4humans. Colleen's songs inspire scenes about impressing your disco friends, a child only capable of older references, and having a tough time in calendar class. Later, we find out what really goes on at a mayonnaise factory and why throwing your money away is the most punk rock thing to do. This episode is sponsored by CNN's The History of Comedy and The Harold Ramis Film School.