Ahhh I'm crushing over the idea of an easily flustered, social trainwreck of a whumpee, and all the awful ways Whumper could abuse that shyness:
Every time whumper enters the room, the whumpee immediately looks down at the floor and pulls their knees to their heaving chest. Though they hide their face, their ears are always red, which inadvertently sends Whumper on a gleeful power trip.
Even simple questions or being talked to makes them stammer and stumble over their words, gulping at the intensity of Whumper's gaze on them. Lips parting but only a strangled "please" comes out.
Whumper grabs their chin and guides their face upward. The whumpee flinches so hard their whole body jerks backward, hitting the concrete wall, and then they apologize in a rushed, embarrassed gasp. "Sorry. Sorry. I didn't mean toβI'm sorry."
Whumpees with a bad habit of apologizing for every little action, even as they're in the middle of a beating or absolutely dehumanizing torture. Feeling shame for hiccuping, for crying or screaming or having voice breaks, apologizing for getting blood on the floor or Whumper's shoes, as they smile lovingly and aim another kick. "Oh, my sweet Whumpee. Do you think apologies will get you any mercy from me?"
Whumpees who are too afraid to say no, even when the options Whumper present with are clearly rigged against them...getting strangled? or spending the night in Whumper's bed? Starving for three days, or eating out of Whumper's hand, on their lap? A brief reprieve from torture, but only if they 'service' Whumper?
Whumper making them repeat humiliating phrases aloud. "I am weak. I am stupid and worthless. I need you, Whumper. I am nothing without you." The Whumpee's face is streaming with tears but they're too afraid to stop.
When Whumper strips them for a bath or examination, they cross their arms over their chest and press their thighs together so tightly their muscles cramp, begging profusely. "Please, please, no, don't look. Please. I can't. I-I can't do it with you looking." Whumper only grins and presses burning kisses on their goosebumped skin.
Making Whumpee stand in front of a mirror as Whumper touches every scar, dipping their fingers into the soft fleshy bruises, into their most intimate parts. "Awh, don't close your eyes. Look at yourself. Look. See how pink your skin gets when you're blushing? It's adorable."
Over time, Whumpee never gets over their shy nature and their captivity even worsens it. They start to believe that they're broken, too fragile and helpless to ever return to their old life :-(
Whumpee tries their very best to stop resisting eye contact and meet Whumper's eyes, just to avoid their disappointed sigh. Their attempts to be more courageous only earn ridicule and laughter from Whumper, who can easily twist this against them.
"Oh, darling, you're trying not to flinch? That only means I'm not hitting you hard enough, hm?" "Wait, no, no I'm sorry, I didn't mean thatβ"
"You're so easy to destroy, Whumpee. You're made of thousands of fragile little pieces thst I can simply put between my fingersβ" pinching Whumpee's cheek as they squirm, or pinching their nose as they panic and gasp through their gag. "and crush you into dust. It delights me, sweetie."