More Stupid Fun
Remember the song that goes "...if you like Pina Coladas, getting caught in the rain..."? It was a favorite of a friend of mine when he was growing up, and although he may have known it was called Escape, he didn't know it was known as the "Pina Colada Song" because he thought the words were, "...if you like bean enchiladas."
Whether conscious or not, making up new words to songs is another example of underrated stupid fun. The technique can include everything from inserting nonsense words in order to make a really little kid laugh (for my children, this included throwing the word "shish-ka-blob" in whenever possible), to changing an artist's song to describe them (example: to the tune of Don't Go Chasin Waterfalls sing "...Don't go pissin me off, or I'm gonna burn your motherfuckin house down..."), or even go the extra creative mile and use a light song to share unpleasant news (example: employing These Are a Few of My Favorite Things sing "...I just got a call and my brother is missing, looks like it might be he's gone back to drinking...").
The possibilities are really quite endless.