Originally Posted by Emperor Tippy
No, Willing explicitly doesn't exist only for spells that say (willing only).
When you cast a spell it checks target and then decides what happens. Willing is the most restrictive of the various subsets in targets (everything but objects falls into the creature subset, for example; or everything that is undead falls into the undead subset, which is a part of the creatures subset. So a lich would fall into the Creature (Undead (Intelligent Undead)) set.
The bottom of the set is willing; you become part of that set in only 2 situations, if you choose it or if you are unconscious. Everything that is part of the willing subset gets no save.
"Some spells restrict you to willing targets only. Declaring yourself as a willing target is something that can be done at any time (even if youíre flat-footed or it isnít your turn). Unconscious creatures are automatically considered willing, but a character who is conscious but immobile or helpless (such as one who is bound, cowering, grappling, paralyzed, pinned, or stunned) is not automatically willing."
in that states that a willing creature doesn't get a save. Forgoing your save is a different section of the text:
"A creature can voluntarily forego a saving throw and willingly accept a spellís result. Even a character with a special resistance to magic can suppress this quality."
I'm not going to argue RAW any further, and "common sense" could swing either way, so how about we let this thread do what it was designed to do and crowdsource it?