No way

"You... you ain't a very nice man to decline a lady's request like that." Bertha rolls towards you menacingly, her brain dome glowing with a red light. "Why don't you want to huh? Is it because I'm not enough woman for you, is that it? Not into attractive brains in a robot body? Let me tell you, I'm more of a woman than you'll ever be able to handle."

She's nearly half your size, but she does have the whole being made of metal thing going for her. Her arms extend and punch you randomly, forcing you to retreat until your back is up against the wall. You strike at her, but all you get for it is a cracked knuckle and pain. It's clear she's won this fight. "I want your cock, so take your pants off or I'll mop the floor with you." Being a janitor, she might mean that literally. Defeated, you drop your pants, letting them fall around your ankles, letting your cock hang out free. "Such a flaccid thing," she says, jabbing it with her metal hand, "I remember them being much bigger than this." She slaps your cock, which from a normal person wouldn't hurt much, but from her it leaves a painful bruise. "Get on your hands and knees." On your hands she's finally taller than you. Her noodle bellow arm wraps under you, curling her 'hand' around your shaft. It's cold, but the vice like grip stops your cock from shrinking down further. She tugs it down, like someone milking a cow, and she's not exactly gentle about it.

Suddenly you yelp in shock as a mop handle is pushed against your rectum. "Robot janitor girls make do." You attempt to struggle, but a quick flick of the wrist and you're **** to calm yourself; with the amount of strength she has she'd be entirely able to rip your dick off if she really wanted to. An inch is inserted, then two. She stops at around three as your pucker has tightened itself tighter than a close-knit group of friends, causing the handle to become stuck. You try squeezing it out, but Bertha just keeps pushing against you. The tip rubs against your prostrate, making you feel warm and your cock to stiffen, and combined that with the squeezing and tugging she's doing, you quickly discharge your loads against the tiles, a disgusting 'SPLAT-split-splot-dribble-dribble' noise. Bertha breathes heavily in excitement through her speakers at the sight of you cumming all over the floor. You're not sure if she's lost in thought or just staring at you or something, but she sits motionless for a while, before finally letting go and backing away backwards.

"Hmh-hah hshh... go away, I need some privacy," her breathing strikes at you in the silence, "leave NOW!"