I'm known for my TMI, the best combination is my old roommate and I. Some of the conversations we had...

Me: Did you have sex in the shower?
Her: Yes, why?
Me: There's blood around drain in the bathtub.*
Her: I'll clean that up.

*This coupled with the fact that 1) I knew she was on the rag and 2) knew she liked period sex.

Another time...

Me: *says something to the effect of her having sex with my cat and becoming impregnated*
Her: That'd explain the huge blood clot when I used the washroom.

I miss her.

EDIT: We also used a 9" black dildo (a gag gift for my 21st birthday) as a centre piece on the table in the living room. Before that it was on the wall so it was the first thing you saw when you came in.