Oh, one of his shoes.
4 seconds sound clip from the Space Jam movie soundboard.
You can hear this line at 00:44:08 in the Blu-ray version of the movie.
Quote context
[...]
- Oh, brother. Here I am, in the peak of my form playing second banana to some sort of a harebrain.
- If this were a union job, I...
- Eureka!
[...]