She knew her sister kept me locked up in a chastity belt at all times

My sister in law was such a tease. She knew her sister kept me locked up in a chastity belt at all times. I went downstairs for some breakfast while my wife was in the shower.

"Do you like my melons? They are perfectly ripe, firm and sweet on the tongue. Would you like a taste? My sister will never find out. She constantly brags how good you are with your tongue. If you like how it tastes, maybe I will put in a good word with her and gain you an early release. Are you game?" I reluctantly shook my head no. I didn't want to cheat on my wife, nor did I want to get caught.

She pouted and said, "No? I'll make sure to let her know you were staring at me in my panties and bra. That should earn you a bit of punishment, won't it? You know she'll believe me over you."

Staring at my panties and bra earn you a bit of punishment