. . . for - some unknown and unhelpful reason, Cal's brain chooses this moment to flick up the image of Tony with his face practically in Sherlock's crotch.

And for the second time in the past three minutes, Cal's face heats up as he looks away.

Stop being disgusting, he orders himself.

Hopefully, Sherlock won't ask. And - doesn't know. And . . . went blind sometime in the last five seconds and didn't notice anything at all.