First off I have a 01 jetta 1.8t 5 speed:
Okay so this morning i went to go to school but when i started it was really clunky and wouldnt do anything when i hit the gas, in neutral it was fine but as soon as i put it in first it was really clunky and wouldnt react to me hitting the gas. after it set for a minute or two then it worked fine and it didnt do it when i left school today or when i left work

i think it may have something to do with condensation? what do you think?