when did spiderman leanr to shoot the web spuds

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now i watched the third spiderman and then the second all in a row and i npoticed something. where in between or during the two did spiderman learn to shoot the web spuds. in the third it was like all of a sudden he learnt a new trick? cmon now. i think it wouldve been cool if we saw how he learnt to do that. they could have incorporated some good comedy i think.