you should tell him, exactly what your thinking
if your horny... tell him what you want him to do to you
It works best, if you can actually picture your boyfriend doing this
because when your in the mood guarenteed you can get him to be in the mood as well... dont be shy about it
have some fun and go into details...
tell him: I want to stit on your dick and ride you like a horse... lol that might not work tho just tell him your horny and hell probably be toodrunk guys
tell him: I can't work, all I can think about is running my tongue up and down your shaft until...What happens to a guy when he gets horny?