Let's say the Winter Soldier was sent out on a lot of honeypot missions. Post-CATWS, with Steve or another partner, nobody realizes that Bucky still has a trigger remaining for “kill them when they orgasm” until things Get Ugly with Bucky's current lover. They're fucking, the lover comes, and suddenly it's Choke Time!!!! + If Steve/current lover finds Bucky's murderface/choking kinda hot, resulting in shameboners and maybe miserable self-loathing jerk-off sessions remembering the attack ++ The solution to the problem? They can only fuck if Bucky is immobilized in bondage, at least until they extinguish the trigger +++ Bucky frantically trying to escape his bondage after consensual sex because part of him thinks he has to complete his mission, panicking because that part of him thinks he's going to be punished by his handlers ++++ Bucky coming was never part of the protocol, so Bucky hasn't come in Years and isn't used to the idea that his pleasure is anything but an incidental side-effect of some missions - and isn't used to coming at all. How does he react to orgasms now?
If you wanna go cracky with it it and say that Bucky's orgasm derails the protocol and have it play out as "It’s a race against time! Get him off before he offs you!" then go for it!
WS trained to kill marks after seducing them
Let's say the Winter Soldier was sent out on a lot of honeypot missions. Post-CATWS, with Steve or another partner, nobody realizes that Bucky still has a trigger remaining for “kill them when they orgasm” until things Get Ugly with Bucky's current lover. They're fucking, the lover comes, and suddenly it's Choke Time!!!!
+ If Steve/current lover finds Bucky's murderface/choking kinda hot, resulting in shameboners and maybe miserable self-loathing jerk-off sessions remembering the attack
++ The solution to the problem? They can only fuck if Bucky is immobilized in bondage, at least until they extinguish the trigger
+++ Bucky frantically trying to escape his bondage after consensual sex because part of him thinks he has to complete his mission, panicking because that part of him thinks he's going to be punished by his handlers
++++ Bucky coming was never part of the protocol, so Bucky hasn't come in Years and isn't used to the idea that his pleasure is anything but an incidental side-effect of some missions - and isn't used to coming at all. How does he react to orgasms now?
If you wanna go cracky with it it and say that Bucky's orgasm derails the protocol and have it play out as "It’s a race against time! Get him off before he offs you!" then go for it!