[first joke]

- Hey Hefe
- What?
- What do you call a guy who hangs out with musicians?
- Uh... you?

[second joke]

- Hey Fat Mike, what's a Jewish dilemma?
- I don't know
- Free ham!

[third joke]

- Hey Hefe, what do you call four Mexicans in quicksand?
- What?
- Cuatro Sink-o!
- Ay!!

[fourth joke]

- Hey Melvin, you know why Hitler comitted suicide?
- Why?
- 'Cause he got the gas bill!

[fifth joke]

- Woah guys, woah, that's not funny man, you crossed the line with that one. I don't know if I ever told you this, but my grandfather, he died in a concentration camp
- Oh, Smelly, that's terrible. I didn't know that
- How did he die?
- He fell off the watchtower
[ Lyrics from: http://www.lyricsfreak.com/n/nofx/arming+the+proletariat+with+potato+guns_20481374.html ]