It's a long story, Bo. I'll explain later.
4 seconds sound clip from the Iron Man (2008) movie soundboard.
You can hear this line at 00:51:48 in the Blu-ray version of the movie.
Quote context
[...]
- We're gonna get outta here, Buzz. Buzz?
- Woody!
- Oh, boy, am I glad to see you guys.
- I knew you'd come back, Woody.
- What are you doin' over there?
- It's a long story, Bo. I'll explain later.
- Whoa! I've got it, Woody. He got it, Woody.
- Now just, just tie it on to something'.
[...]