Does it mean "or else, you have to hire another postdoc"?
Context:
Lab equipment is expensive and delicate. And you, you’re not so coordinated. Nope. Not so much.
Oops! You could pay to replace this one broken piece, or you could hire another postdoc.
Your natural ability to control the movements of your body. If you are well coordinated (as most athletics are) you can run, throw a ball, hit a ball, kick a ball, swing on a high rope, or do many things with your body. If you are not so well coordinated, you may have problems carrying a glass of water across a room without spilling the water.
[not a teacher]
I think the humor is in Option #2, which might be implying that you will be the postdoc getting replaced, so be careful.