Do not walk into your team leaders bookcase.
If you do walk into your team leaders bookcase, it’s probably worth not finding it hilarious, and getting a fit of the giggles.
However, even this is excusable if your team leader doesn’t notice. If he does then explaining that walking into bookcases is funny is probably not the way forward. He may start to think that you’re a little odd. This is if he hasn’t already worked that out.
Maybe I’ve had too much coffee, but I still think it’s funny – and it’s a bookcase! What’s wrong with me!?!?!!!
(To be fair, said team leader was fairly busy being amused at me giggling to have any serious concerns about my mental state)