Beer vs lager

Way off base here, but I had to highlight the difference between the British and American definitions of beer. American beer = British lager, served chilled. British beer should not be put in the fridge lest it loses its flavour. Source of confusion, hence everyone thinking the British drink warm beer. They do, it's just not the same beer. It's like trousers and pants; the British use both words, but for different garments. Over here, someone commented on my pants the other day. I had to stop myself from checking if they were sticking out or something... (I LOVE the diverse ways in which English-speakers use the same words. It's so flexible that way...)