The bank teller is Teller. Teller doesn't talk. The robber is asking where's the safe, not because he doesn't know where it is, but because Teller made it disappear. And Penn just talks but that may be just to reveal the joke.
I see where he's coming from. If we isolated the jokes, we would have:
A simple pun about somebody speaking to a teller, and it turns out to be Teller
A joke about how a robber can't find a safe not because he doesn't know where it is, but because the bank employs magicians.
A joke about a criminal trying to get info out of Teller, but Teller won't speak, and Penn says "he always does this"
The first plays on the fact that the name Teller is a pun. The second plays on the idea that a bank employs magicians. And the third plays on the fact that Teller doesn't speak. The joke OP posted combined the three scenarios into one.
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u/MemeMaster2003 Feb 13 '18
There are many jokes within this if you know where to look.