Walking in on him.

Due to the mercenaries being unused to the harsh climate in BLU's territory, RED Team was recently in a bit of a losing streak. Missed shots due to the wind throwing someone off-balance, mercs slipping on ice, a couple of times off of buildings or into the hands of the opposing team.

To put it simply, the men weren't all that happy with their luck so far that week- especially the Sniper, who was having trouble finding a perch to snipe from in the unfamiliar territory. As if that weren't enough, he was simply pent-up in general- he tended to be, partly due to his paranoia and workaholic habits leading him to be a bit of a hermit.

Eventually, after a particularly bad mission, Sniper had finally decided he needed to blow off some steam. So, retreating to his van, he shucked off his trousers and vest, slumping back in one of the booth seats. Tugging down his boxers a bit, he freed up his length, using his free hand to smoke a cigarette he'd lit while entering the camper.

Unfortunately for him, the comfortable silence was short-lived. Only a minute or so after he began, a light rap sounded on the door, and before he could reply Sniper watched he door swing open, eyes going wide as his eyes met his coworker's own.

Art is from the official TF2 comic #6, The Naked and The Dead.