A transition metal.
Lettuce alone, without dressing. I remembered this today from a joke book I had when I was a kid. Wasn't sure if it should be here or /r/dadjokes
A metronome!
The Circuits! (this is a joke i made up when i was like 10, i don't think it ever caught on)
Nuts and bolts
Because whenever one of them climbs to the top, the others drag it back down.
Because if he dragged her around by the feet she would fill up with dirt.
Cu later!