Well, the title and the content are two different things.

You're talking about emotions... and not "Drop"

Sub drop may seem an emotional thing, and emotionally sensitive aftercare can alleviate it... but...

Drop is the aftereffect of an endorphin high. Endorphins are produced by the brain as a response to physical pain and fatigue pain (marathon runners for example.)

Dom/mes (masters and misstresses both, since you seem to have pointedly omitted them...) don't get Drop. We aren't generating endorphins.

(unless it was a marathon whipping session... and even then... I doubt it.)

Now... is there an equivalent adrenaline aftereffect? Only if it goes unused. I suspect again, there aren't many cases where that happens either... Maybe if at the height of a session, the safeword gets used and the scene ends... but that wouldn't require and emotional assist to get over it.

So I vote no. No such thing as Master Drop.