Pims - Maybe if they added some gin, otherwise a total waste of my boozing time
The Pronunciation of Ibiza (Eye-bee-tha) and Filet (Fil-let) - Nails on a chalkboard
Notting Hill Carnival - Bad music and people you DO NOT want to see in Brazilian Carnival outfits, and isn't Carnival before Easter not in August
HP "Brown" Sauce - Nasty business
Chips (a.k.a. Fries) with EVERYTHING - You can always spot a Brit traveling in Europe because there is a plate of fries next to the pizza, meat, pasta, whatever. Weirdness, that crap isn't good for you.