It is nearly impossible to count the number of times the Marauders sung 'Over The Rainbow' as a quartet after Peter made James, Remus and Sirius watch 'The Wizard of Oz' in their third year.
It is possible, however, to count the number of times the Marauders tried to perform 'The Wizard of Oz' in front of the whole school at dinner. The only did so once because they were banned by the Ministry of Magic for improper use of class time possession of rare and illegal objects being flaunted about in a "immoral" manner by convincing the first years to eat some of the Lebanese fireworks they owned.
Remus, who tolerated the performance, was a little confused as to why 'The Wizard of Oz' even needed fireworks.
To this, James replied "Just go with it.".
Yeah, Lebanese fireworks, watch out.
