Was it some sort of blind hookup Tinder-like, and the "password" was a real, actual piece of cheese?
Like with spy craft, "I'll be at the plaza at 10pm, sitting on the bench in front of the fountain. I will be wearing a Gary Coleman "OBEY" t-shirt and carrying a dark green backpack. You will ask me for a piece of cheese".
"Before we bone, I must tell you... I ate radishes earlier. Perhaps you should, too."
And that's how you get on equal footing before jumping into the sack.