Slaughter

My girlfriend has an A4 01 SS..and everytime she shifts it into gear the car makes this weird clunking noise..like a drive shaft rear end clunk..it bothers the **** outta me and i wanna check it out but her dad's one of those "I know it all..i know everything and your stupid just cause your not me" kinda guys and wont even let me near the car sometimes. Does anyone else have that clunking noise going on? the car has never been driven hard..well i launched it hard once long long time ago. but other than that..its babied.