Depends on the excuse right ;D there's some excuses that I'll be like okay then and other ones where I'll be like o_O or -_- or some combination of both which is probably entertaining to look at.
having said that my excuses always sound like excuses to me even if I would accept them coming from someone else
This one kind of had to be modified for our current time didn't it xD
Generally speaking of course.
Have no legs, can't walk is a legit excuse for someone who has no leg's and can't walk.
Can't succeed because life is unfair. Not legit.