i absolutely hate micro econ 1st year (1b03?) and i forgotto drop it last friday (it's boring!). i dont care about the 100 dollars i will lose, its justthe 'CAN' ill have on my transcript that im bothered by. is there anything icould do? or, do grad schools care it there is a "CAN" beside a firstyear class you took in the summer and is not required for your degree? thanks for the replies!

Not a big deal. As long as you don't have a lot of cancelled courses, you will be fine for grad school.

You have till july 18th to cancel it else failure after this date. Remember longer time goes, more money you lose.
http://registrar.mcmaster.ca /regis...sessional.html

There isn't much you can do just for forgetting, unfortunately. Having a cancelled or course isn't a problem, as long as it doesn't become a regular thing every term or something