"Wheet!" is the best sound effect I've ever heard. Because that's what automatic doors do! For those who missed it: the agency for which Hexakitty (the female lead) works is MI-Pi. And yes, M is replaced by M&M. Mmm, delicious delicious boss! Lastly, I have no idea where the title for this strip came from. I think the first few panels? How, though, well, no idea.