ok well i'm a pretty funny guy, have a sense of humor and always make jokes around my friends.. i dunno why, but when im with friends who are smarter than me. i feel some sort of pressure and completely lose my sense of humor.. like i try to make jokes but turn out either unfunny or stammer.. i feel that i also lose my sense of humor in front of them..also this happens when im around girls and often girls i like.. like my heart beats really fast and i dont know what to say and lots of awkward silence.. 
what should it do??

what should it do??