This reminds me of something that happened around this time last year:
I was in your exact situation. My friends and I had to think of a rap to do about the 8 parts of speech. The day before it was due, we couldn't think of anything, so one of my friends just copied something off the Internet.
We performed it the next day, and everybody liked it. We thought we'd gotten away with it, until this dumb kid ratted on us.
I guess we deserved it, considering we committed MAJOR PLAGIARISM, but I was still mad.
Anyway, my only advice on this is to think of a random topic and go with it.
Thanks for the help. I used the telephone idea and this is the rap I made (I did it at 10pm last-night so it stupid). ____________________________________________________________________
Telephones are big and chunky and they sound so loud and funky the big ones are kinda junky it makes me look punky
Monkeys don't need junky telephones they just turn around and get funky
Ring, ring, who's there Is it an iPhone, is it a Droid Is everyone getting annoyed with my big and chunky telephone
Monkeys don't need junky telephones they just turn around and get funky
Phones, phones, bling, bling I got my cha-ching Dancing in the corner with bling on my phone I got games I'm not the only one who games
Monkeys don't need junky telephones they just turn around and get funky
I always wanted the red one but I got none I hate putting my hair in a bun because I got no sun ______________________________________
Really stupid (my partner is a weird kid so I'm not doing it with him and he can read most of it (about the weird part Ima say he might be bi, he wanted to hold my hand, he touched a kid in the wrong spot, he sat on a kid, he put his butt up to my friends butt, you see that, nasty!!))