
A floppy DISK?
The Big Bang Theory Season 5, Episode 5

Oh, an Euler's Disk, fun.
The Big Bang Theory Season 10, Episode 16

can hold his breath
longer than the DISK can spin.
The Big Bang Theory Season 10, Episode 16

Okay, this is an Euler's Disk.
The Big Bang Theory Season 10, Episode 16

Okay, who had
Leonard gets a floppy DISK?
The Big Bang Theory Season 3, Episode 2