First off....... Morning quitters !!
Now as for placing the dip in upper lip? I did once in a while. I kinda liked the different sensation it gave.
And knight? Go find out what it is. PERIOD ! It may be nothing, it may be the start of something, but catching it early is the key. The placement of the chew/dip is just one factor as you have to remember the juice itself is not confined to the same spot all the time. Bottom line, go to the Dr's, Dentist, whatever and find out NOW ! Feel free to pm if I can help in any way.