There is a travelling dildo salesman. He knocks on a woman's door and she allows him in. He states: "I have a dildo worth 10 dollars, another worth 20 dollars, and another worth 30 dollars".

She looks them over and finally asks him: "How much for the silver dildo?"

He contemplates for a second and says "um...150 dollars."

She says: "ok, I'll take it".

He leaves. Later that day he's back at the office and his boss asks him what he sold that day. The salesman replies: "I sold three 10 dollar dildos, seven 20 dollar dildos, two 30 dollard dildos, and i got 150 bucks for my thermos!!".