I'm leashed like a pet

Samantha hands Becky a towel to wipe my cum off her face, while Susan approaches me with the silk rope.

"Excuse me, John," she says, wrapping the string around my genitals. "But a bet is a bet." Despite my wounded pride, I remain still until Susan has finished tying the string around the base of my genitals, leaving a long length of role to be used as a leash.

"Here you go," Susan steps back, handing the 'leash' to Becky. Becky takes the leash and playfully tugs it, making me wince as she pulls my cock and balls.

"Damn, you're looking even bigger than before," Samatha remarks from the side. And she's not wrong: the pressure around my cock and balls causes my genitals to protrude out even more than usual, accentuating them against my silhouette.

"You look so stupid right now", Becky giggles, walking a few rounds around our beach mat and pulling me along behind her. "You're like my pet!"

Despite the humiliating situation I'm in, I cannot help but be aroused. Samantha gasps when she sees me become erect again, drawing the attention of Susan and Becky.

"Wait, you're hard AGAIN??" Becky exclaims, laughing. Even Susan and Samantha are giggling at the sight of my erect cock and tight balls with the rope tied around their base.

"Horny boy, you," Becky calls out, playfully slapping my cock with her open palm. I wince and shudder, but the sensation is a pleasant sort of pain. Susan and Samantha take a few swipes at my cock too, making it bounce up and down in the air, throbbing with desire.