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If you are an undergrad in a lab and you need something, do not start looking through random drawers that don't belong to your lab. Particularly if the person they do belong to is literally standing right there.

I would have given you a glass pipet if you asked, but because you acted like a jerk (no "sorry I didn't know") I told you to go ask someone from your lab to get you one.

Relatedly: don't borrow equipment without asking (this one also applies to non-undergrads).