you can't be half pregnant
either-or
trilemma
false dilemma
fork in the road
false dichotomy
as the case may be
whatever the case may be
tough call
polylemma
six and two threes
diptote
lesser evil
ex parte
alternative
Hobson's choice
either
binary
doomed if you do, doomed if you don't
quadrilemma
choice
option
between a rock and a hard place
leave off
up to
match made in hell
spoilt for choice
between the hammer and the anvil
between
dilemma
paradox
biconditional
bag
xor
slip
will
antioption
pleasure
error
elect
vagrate
double
first dibs
rather
take
of one's choice
damned if one does and damned if one doesn't
on the horns of a dilemma
restatement
reproposal