limp-rag syndrome

Where a malingerer habitually claims to be utterly drained/exhausted whenever anything resembling w-o-r-k is suggested, yet is then able to hop right back up and participate in more desirable stuff like eating, intimacy, pleasant/recreational activities, etc.

I'm all for allowing someone to decline helping out with a group-effort task if he truly is disabled or too weak/fatigued to even move a muscle, but I hate it when people use this excuse one moment to get out of any physical effort, yet are then perfectly capable of robustly marching off and playing sports or whatever just moments later --- sounds like limp-rag syndrome to me.