Im soo emarred what do i do?

kay so im in colorguard at my highschool. i just made the team and i love it. were having a car wash tomorrow. so i get a call and it sounds just like my bff kaylee. she said hello, is krista there? so i answered uhm who wants to know? all snobbish (i was trying to mess with kaylee cause she did the same thing to me.) but the replie on the other line was...um its megan from colorguard...i was just...calling to remind you about the carwash...tomorrow. so i freaked out and said, "im sooo sorry i thought you were my friend!!! she said it was ok then we hung up... but i have to see her tomorro and im super embarred. what do i do?!?!?! and sorry no i cant skip out on the car wash its to earn money for my flag and rifle. :(