Leo's kneeling on the bed with his ass in the air, wondering why exactly he gets himself into these as he holds his cheeks as far apart as he can and keeps his tail high. The sheets beneath him are slightly damp; he'd been in the bathroom not too long ago, making sure to get extremely cleaned out for this. 
His ass already aches in the way that suggests a good stretching, stuffing or both, pleasure twisting with pain to form a steadily building knot. He's full in a way that makes his cock ache and his head swim, but also leaves his hands shaking as he tries not to buckle under the strain. 
Paper crinkles behind him. Leo grits his teeth, feeling a slick thumb tug on his rim, nudging him open for another intrusion. It's small--they all are--but with all jammed up he already is it feels fucking huge. He's not sure how much more of this he can take. 
"Easy, Fearless," Raph soothes, running a hand along his shell. "You're doing good." 
"How many left?" Leo grits out. 
"Less than you've got in ya right now, that's for sure." 
"Not comforting," Leo mutters. 
"Hey, I'm not the one who bought a fucking shitload of these things by mistake," Raph points out. 
"No, you're the one who decided the best reaction to that was stuffing my ass full of Tootsie Pops." 
"Oh, relax," Raph chides. "Well, don't relax--I don't wanna get Donnie's help fishing these out of you," (Leo's heart skips a beat at the idea) "But you're gonna be just fine, Fearless." He gives Leo a pat on the hip. "Be a good boy and I'll letcha eat the grape ones afterward, ‘mkay?" 
"I don't know why I let you do this to me," Leo mutters. 
"Cause you love it," Raph says easily. "'Specially when I do it to ya." 
Leo closes his eyes with a sigh. He hates it when Raph is right.