Hob·son's choice 
/ˈhɑ:bsənz-/ noun
plural ∼ choices /ˈhɑ:bsənz-/ noun [count] : a situation in which you are supposed to make a choice but do not have a real choice because there is only one thing you can have or do
▪ He jokingly referred to dinner as a Hobson's choice between soup and salad or salad and soup.
▪ He jokingly referred to dinner as a Hobson's choice between soup and salad or salad and soup.
