It became apparent long ago that many providers are not necessarily down with every acronym that gets thrown around a place like this. You start rattling them off, and will often just get a puzzled look back, especially from the younger ones.
Yes. Though some MPAs are weird and don't even like LFK while they have no problem with DATY or FIV.
For me, if its not BBBJ then DFK + FIV while she's stroking is still pretty damn good, especially with a new MPA.