One of the biggest problems I had to overcome in making this giant mouth deadly was how do I get a collision between a tooth and a sprite. I eventually overcame this problem with this solution:
if rocketx>48 and rocketx<120 then goto dying
It's not pretty, but it works quite well.
Yes, it was another day of coding. Well spent or not? You decide. Now I'm bored and sick of coding for the day. And I only woke up at 11am. I only spent a couple of hours on this.