[OldDeckHand]

"Very cool. Pardon my ignorance, but what the heck is a “car boot sale”? Is that like a flea market or swap meet?"

Exactly like a swap meet or flea market. It mean's selling crap out of the trunk (boot) of your car.

[count-your-change]

If you’re going to decipher Brit. speak about cars remember the boot is our trunk, the bonnet is our hood, the wind screen is our wind shield, a spanner is our wrench, petrol is our gasoline, left is our right and the manuals incomprehensible.

[Fast Moving Angel]

Thank you!