[all] Ah, I see what you mean. I did intend to cover all forms of avatar, including the bony chap, but in hindsight that is a bit broad. Carry on with the tooth fairy?
Dear Lucy, Your recent payment of one incisor was credited to your account yesterday. Be aware that due to shifts in certain volatile market assets you are currently in a position of significant negative equity vis-a-vis your dental assemblage. I have regretfully decided to foreclose on your remaining debt and would appreciate your payment of the outstanding balance (currently assessed at two canines, a premolar, two molars and a wisdom tooth) by close of business Thursday.
Dear William, It has come to my attention that your brother George has never provided me with a tooth in trade. I would muchly like to add one of his pristine enamels to my collection, but based on his unwillingness to cooperate, I beseech you to acquire one for me. I will pay triple the going rate. It would please me to no ends if you would procure for me the complete collection, at which time I may have another little favor to ask. Yours In Good Faith,