A ball gag

"Uhh hey. Me and my girlfriend have been getting into more... kinkier."

The woman nods. "Cool. What are you into?"

"Well, we've talked about using a ball gag."

"Ohh, that's kinky. What kind of gag?"

"Well, I mean, you'd be the expert between the two of us."

The store clerk lets out a chuckle. "Well sure, come with me."

You follow the store assistant towards an aisle, making sure to glance at her juicy ass that she's flaunting in skin-tight leather pants. At the appropriate aisle, the woman grabs a box labeled 'Suppressor Silicone Gag' and hands it to you.

"This one is my go to model."

"Looks good to me." You check the price sticker, which is $20.

"Perfect. Can I get you anything else?"

"Uhh, I'll need a bag."

"Sure. We can do a gift box for a bit extra if you want?"

"A bag will be fine, thanks."

Back at the counter, you hand the clerk the cash. With your purchase in hand, you head out, your cock stiffening to the thought of gagging your little submissive and fucking her in various public locations.