Hope this answers the thread question

TFTB (or Tftb) = Topping from the bottom = the practice of a pyl using disingenious, manipulative tactics in order to get a PYL to do something the pyl desires. It is sometimes difficult to tell playful but bratty behavior from TFTB.

For example, if a sub wants a spanking, s/he may playfully cut up and tease the Dominant, trying to goad him into "spanking" them so they will "behave." But if topping from the bottom, the pyl will deliberate break rules, trying to anger the PYL into punishing them, rather than simply being open and honest and asking for a spanking