Spaceship

Last night, a spaceship fell from the sky and landed on my driveway.
A small green man climbed out a hatch, waved hello, and asked me if he could borrow my tools.
At least I thought that was what he was asking.
“Sure,” I said. “Do you need English or Metric?”
The alien shrugged. “Grobnick blasdo,” he said, and he grabbed a few things from the garage before working on his engine.
It took him an hour before the ship was pulsing a greenish glow.
“Grobnick bladso,” he said, waved, and flew off into space.
Little fucker stole my tools.