Mew:

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I think I saw this pun on XKDC. If you’re a physicist, then it can’t have a definite location if you can’t observe it?

TosxyChor:

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But Siiw did get it right, right? The father is most definitely with the mother… in a fun way.

Three backpackers arrive at an inn with only one vacant room. The room is $30 a night, but only has two single beds. They’ll have to put an extra cot in, and it’ll be cramped. The backpackers pay, anyway.

The manager, hearing of this situation, graciously gives them a $5 discount. He gives it to an intern to pass on to the backpackers. But who wants to split $5 three ways? The intern gives each of the backpackers $1 and keeps the $2 for now.

The backpackers paid $27, the intern has their $2. That makes $29 when the original price of the room was $30. Where did the $1 go?

Another variation, with the same answer:

Abe wants to buy a $7 shirt, but she’s spent all her allowance already. Her two shopping buddies generously lend her $5 because the shirt looks cute on her. The cashier gives Abe $3. Abe gives $1 to each of her two friends and keeps $1 for herself because she doesn’t have any smaller change.

“Wait,” says one of her buddies, “You owe us both $8 in total, right? But we have $3 between us… that, plus $8 makes $11. Where did that extra dollar come from?”