(warning: possible spoilers!)
While in woodshop class, the boys saw everything they can get their hands on, including a phone, medical kit, and chair. Beavis then must be rushed to the hospital after an accident happens involving tons of blood, the table saw, and Beavis's finger. In the end, Beavis picks his nose and the finger falls off again.
Beavis and Butthead loved woodshop so much they sawed their goggles, then a chair, a picture, the teacher's lunch, and a lot of stuff but Beavis put his finger on the saw blade and it was cut off. After playing with the finger, they rushed Beavis to the hospital to get it fixed. Then when everything seemed fine, Beavis knocked off his finger again (with his nose if you know what I mean)!
10 out of 10