Little this, tiny that.

Commander

" doctor, Mr John is here for his delivery" a young man dressed in a cute outfit knocks on the chief doctors cabin.

"ah, my boy" the doctor looks up from his files.

Dr Steve pats his lap, and Bucky meets his eyes with a judgmental frown.

“Aw, don’t be like that. Come here.”

“You’re working,” Bucky points out, all rational about it. “I would hate to distract you, Commander.”

I can always make time for my boy,” Steve says, voice lowered, eyes unwavering on Bucky’s. “Come on, sweetheart. Sit on daddy’s lap.”

Bucky chokes on air.

He casts a wild glance at the door.

Steve sits up straighter and schools his face into a stern frown.

“Bucky. I won’t ask again.”

Bucky stumbles forward, all his controlled grace vanishing in the blink of an eye. Steve catches him by the arm once he’s within reach and tugs him closer, helping him climb on Steve’s lap. He tries to do a half-assed job at first, perching sideways on Steve’s thighs like some blushing virgin. Steve swats his ass and manhandles Bucky into straddling him. He squirms uncomfortably

“Sit still, baby.”

"but I have work and I don't wanna stay other wise I know what you will do"

He looks up with a defiant expression on his face.

Dr Steve let's out a laugh but then Steve smacks him square on his arched behind. It’s gentle as far as these things go, but Bucky still subsides with a whimper, big, wet eyes blinking down at Steve. It’s adorable, how quickly he goes from defiant to pitiful. Steve rubs the spot he hit, thumb stroking along the faint mark blooming there.

“Behave, Buck,” he says, the words half a sigh.

“Sorry, daddy.”

“Ssh, it’s alright, honey. I know you want to be good.” Stevem says as he caresses the bottom cheek he just slapped.

"anyways relax imtoo busy today, your testing will take place at night today because we need to give the new subject to her owner"

Bucky winces at the mention of the painful experiment he has to go through since he woke up in this strange place a year ago.

“Yes, daddy.”

“That’s my boy.”

Bucky melts.

Dr gives a matching smack on the other cheek and helps him up.

"tonight will be the water tank part again, it will be hard but try to be strong OK" he says now with a no nonsense expression.

Bucky flinhes and his eyes fill with tears, he can feel his bladder kicking thinking about the painful and traumatic experience coming.

He nods.

He gives Bucky’s ass a good squeeze.

He pats his head and moves on.