The Professor: A standard issue human! They still make these, huh?
Howie: So, Professor, what's with the multiple limbs.
The Professor: Funny story, that one.
The Professor: I was teleporting myself from my loungeroom to my lab, but I forgot to check the pod for CREEPY CRAWLIES.
The Professor: Luckily, there weren't any. Then when I got to my lab, I injected myself with bug DNA.