When someone is forced to volunteer for something, he or she can be said to be volunteered. For example, if a manager asks an employee, could you volunteer to perform task X, then the employee may not practically be in a situation to say no; volunteer is used euphemistically.
I first heard this usage in 2014, but I first lived in a native English speaking country in 2014, so my experience does not say too much. Is this euphemistic usage of to be volunteered recent?
(See also: urbandictionary entry for volunteered)