It's like ring tones

But for your fly. It's Fly Tunes.
This is one of the things over the last few days that has brought a smile to my face. After announcing my new invention to my friend A, we spent a while listing off the songs that should come out when people we know unzip.
Countdown to my birthday: 5 days!
Is this a sign of a deteriorated mental state? Possibly.
Do I care? Not really. It's harmless and it made me laugh a lot.
5 days!