This is an M&M's ad that aired in 1997 and it has Red and Yellow showing their muscles (and butts) to Ms. Green.
Script:[]
- Dennis: So boys, I'd say if you wanna impress the ladies, just be your sweet selves.
- Red: Oh, that's, uh, that's a pun, isn't it?
- Ms. Green: Hey, guys. I didn't know you've worked out.
- Red: Sure. 'Cause the "M" is for...
- Red and Yellow: MACHO!
- [straining]
- [Ms. Green gasps]
- Yellow: Check out my paranoids!
- [Ms. Green laughing]
- Red: [groans] Flesh some pecs!
- Ms. Green: I don't know which one's the worst! Oh, thanks, guys, I needed that!
- Dennis: Is that what you were going for?
- Yellow: Hey, she laughed.
- Dennis: Yeah, she did.
- Ms. Green: Forget it. [laughs]