Further adventures in homicidal coffee

I failed to mention here that the day after my coffee tried twice to kill me, I went to the coffee room and poured myself a cup. I've only just recovered from the burns on the tip of my tongue and the roof of my mouth.

Today, the coffee attempted homicide again, but this time it only succeeded in suicide. Leapt out of its cup all over the counter--but not onto me! I have just spent an exciting twenty minutes cleaning up the mess.

(no subject)

What is the collective noun for a group of rats?