Ewwwwwwww.

There's a pause while Strange just represses the urge to gag as Sherlock unzips a bag that's inside his chest (oh god this is really gross) and takes pen and paper out from that. A little morbid part of him wants to know precisely how that works, who actually installed the pouch to begin with, or if it was something the zombie did to himself. However, Strange's common sense wins out by pointing out that the whole thing's real fucking nasty.

"Can't you have had the courtesy to just die? This," said as he gestures to Sherlock's everything, "is just ridiculous."