"Hanging Out Forever" is a song Banana Man sings in "We Fixed a Truck" while he, Finn, Jake, and BMO work on fixing the truck. It was written by Andy Ristaino. The original version of the song, titled "Building a Car," had very different lyrics but was changed because it "didn't quite fit the episode."
| Fixing a truck with the neighbors,|
not a better way to spend some time.
Hoping to see if they like me,
using automotive savvy.
| Do a good job they'll give me props,|
BAM, I'm asked to come back tomorrow.
A future I see with them and me,
best buds, hanging out forever.
| Board game Friday nights.|
Best friend pillow fights.
| Building a car we're gonna go far,|
if we can tune our acts together.
Try it and see, a better life
awaits down the road.
| Might disagree from time to time,|
but there's a bridge on murky water.
Pieces fit clear when we all work,
towards a common goal.
| and we won't stop,|
till we make it run.
- Official upload - https://soundcloud.com/adventure-time-official/hanging-out-forever