Sex Pollen: That tickle in the muse's nose? It's not hayfever, it's a pervy plant, and for the next (Anon decides) the muse is going to want to shag everything that moves. Especially if it moves in front of them.
Marathon: For reasons best left up to the cosmos, the muse has the uncontrollable urge to indulge in some 'me time' every half hour no matter where they are or what they're doing for (anon decides). (Try not to get arrested!)
Sensitivity: All of the muse is their new erogenous zone, and clothing does not. help this. for the next (anon decides)
A sudden um...: For the next (anon decides) muse will suffer an impromptu orgasm every time (anon decides-breathing does not count) happens. It may be multiple things and it may utilize any sense, including time (IE every half hour)
The urge: Whether or not they were aware of it before, the muse now has a mating season and it's open. For the next (anon decides) the muse will be driven crazy with the need to go forth and make babies or shag themselves exhausted trying.
A gift: Muse is tied up in a chair or a compromising position with a list of instructions detailing others to do (anon decides) sexual act(s) to them. Anyone who comes across them will be compelled to act out these instructions for (anon decides)
Irresistible: There's just something about the muse today, and for (anon decides)...but no one they come across will be able to control themselves. No matter who they are or how they feel, they'll be compelled to try to get some personal time with the muse. And it's not for an interview.
It's not the Midas touch: If the muse touches someone for the next (anon decides) that person will have a sudden (terribly timed) orgasm. Oops?
Owned: Either the muse owns another, or is owned by someone else for (anon decides) but they'll both be compelled to take certain sexy advantage of that for as long as it lasts.
Absolute Obedience: Anything anyone asks the muse must do for (anon decides) but one catch - it must be sexual in nature. Oh...wait, no there's two catches. Every time they issue a command they lose more control of themselves and can't help asking more next time. Absolute power corrupts.
Four minutes: The world will end immediately if the muse doesn't shag whoever they see for the next (anon decides). And that would just be terrible, wouldn't it?
Impaired judgment: Booze, drugs, sex, they all blend together. The muse has had a bit too much of something and thinks everyone around them is prime sex estate for the next (anon decides). They're not compelled to or any good at picking people up, they just think everyone's really hot, you guys.
Sleeping Beauty: There's only one way to wake the muse from their slumber (other than waiting for anon decides) and it's not a kiss.
Frustration: The muse has a desperate need for relief for (anon decides) but no matter what they do it just won't come without a little help from a friend. A person friend, not a plastic friend.
Candid Camera: The muse and someone else have been trapped in a room with cameras an ordered to perform..FOR SCIENCE. Anon could decide who, or it could be anyone who encounters them for (anon decides).