Ex-hard riddles !@##$%^^**

Welcome back to riddles for fun.
Here is a question: What cup do you swallow?
A) paper cup?
B) wood cup or
C) Not over here, type answer.

SO second question, THE seller dosen want it, the buyer don't use it, the user doesn't see it, What is it?


Hope u can find out? Dateline: 18 March 2007.