Yes, he may have cost the company thousands of dollars in lost man hours due to testing the completely wrong application suite. Not to Botta the situation, but at least that suite he did test is now 100% fool proof and bug free.
one who botts. someone who likes to bott someone else, as opposed to a bottee - the one who is being botted.
can be derogatory meaning gay, queer, poof.
can be friendly meaning pal, buddy, mate.