What is the Peanut butter and Jam joke from How I Met your Mother from April 13th, 2009

Mine was that I was pregnant & although I love my little pleasant surprise I was not planning on having anymore. There is 10 years difference between my last 2.

Why were the two guitar players fighting?

There is more to the joke, but I want people to try and answer it first. Then I’ll put in more detail.
Well, I guess I’ll just put the answer.

Q: Why were the guitar players fighting?
A: They were fretting over who was going to play the solo

Q: How did the bass player end up playing the solo?

A: He pulled some strings.
lol, karlt… nice! How about….

Why would an electronic robot make a good band leader?

Because metal is a great conductor.

question: have you heard the joke about the butter?
answer: Well I can’t tell you, you might spread it! (spreading the butter, get it!)
question:Why can’t kids take a nap
answer: because it’s kidnapping! (i made this up myself), honest!

There are baseball jokes, such as “They have endurance cause they play all 9 innings” and “We get to all the bases” and they’re sexual innuendos. Is there a list like that for Mixed Martial Artists?

She is very relaxed and we have known her for 4years and we are senors and want to play a little joke on her and ideas??

Okay, so the joke is: I bet I can make this napkin rise without touching it.
There’s some sort of action involved in making the napkin rise;that’s supposed to be the dirty joke. My mom won’t tell me! Does anyone know?

i keep seeing it in movies and stuff. like there will be some dressed up guy with a gun and someone will ask him Is he in the Postal Service.

is there some sort of inside joke about this?

I googled it in every different way and can’t find an answer. It was on the dirty joke Wednesday one week on the radio station Oldies 107.9 and I tried calling in but could never get through. It’s been killing me!

I love blonde jokes but i’m just curious how did this start.