to this you add some baking soda together with a few white vinegar to cover them completely. blockhead is a colloquial word meaning stupid, silly. but the dorm had pay phones. we are so grateful for the support, it will help us very much, thank you again! you may like to leave the questions you wrote previously in the introduction up on the board for students to refer to. at the heart of our operation are real people, ready to support you and your team along the way. 