i have a couple for you. well a few (french teacher here) if you say: je suis chaud(e) i am hot--it is a sexual thing. not to be done. same for je suis plein(e) i am full would be i am pregnant. also to be avoided. and my favorite idiomatic phrase en français of all time is il pleut comme une vach qui pisse: it's raining like a pissing cow. hmm and just in my travels be careful of asking for a ride in the uk. you'd be better off asking for a lift. oh i love language!