When Dustin drops the electronic watch in the boy's drink toward the end of the episode, the boy would have been electrocuted since he was holding on to the cup.
Zoey, Nicole, and Dana had to hold a fund raiser to get Drake Bell for their Spring Fling because the boys said the Spring Flings were always lame. But Chase said that the "school" paid for the band every year. The school, however, wouldn't pay or book for Drake Bell, because they choose to book a lame band. The whole point of the fundraiser is to raise money in order to book Drake Bell and avoid the latter playing at Spring Fling.
When Dustin says, "man", just as he leaves after showing Zoey the zap watch for Quinn's experiment, his lips make no movement.