Where are you putting those birds?
So the British sometimes have different names for items of clothing, but you can usually figure them out. A sweater (US) is really a cardi (UK). Pants (US) become trousers (UK). Underpants (US) are just plain old pants (UK).
But this is the funniest one I have yet come across. I’m sure you’re familiar with that unfortunate men’s swim-attire known as the Speedo…. and I’m sure you know that in the US it is commonly referred to as a banana hammock…. well, here in the UK, they call them budgie smugglers! And apparently they are back in style!