i hate my job

ok, i don't hate it. i am very very pissed off right this second. one of my officemates, to whom i don't like to refer in that way because it some how validates his position, just (about 2 minutes ago) made me raise my voice and say "well, if you do the math, that IS what it means". note the tone, if you can. strong words for 8:41 am. henceforth he shall be refered to as "that slug". he's just one of THOSE guys who has a comment for everything. like when i just suggested we might change the time to go to the pub to 4 pm (or later, i never said it had to be 4) instead of 1 (i mean who wants to go back to work after the pub?!) since there are these seminars at 1 every friday. blah blah blah, i said didn't working a 37.5 hour week (which it says i should work, in my induction pack, i checked) mean 7.5 hours mon-thurs and 7 hours on a friday, which means (drum roll) we could go to the pub at 4. that slugs response? no we can't. or no it doesn't mean we can leave at 4 or some similarily MADDENING comment. so i fired back with the "do the math" before i could check myself which, if you know me, is not surprising in the least, and am now silently seething behind the row of (not dense enough, if you ask me) plants separating me from that slug.