How to appear more confident?

i'm the same exact way! and the same exact thing with my boyfriend and his parents also! you have to just take a deep breath and think about what you're gonna say. does it relate to the joke? is it funny? did you get good feed back on it when you said it before? try to just ease up. laugh at the parents jokes and just try to figure out what they would find funny. and if they ask why you're so quiet just tell them you're shy at first! but i'm sure if you guys continue to go out you'll feel more open around his parents and you'll be able to tell them your corny funny jokes! :]