Last Legs (Prompt)

"My car's on its last legs." I heard someone say not long ago. It wasn't the first time I heard it but it has always seemed such a strange phrase. Strangeness often strolls hand-in-hand with us writers so...
Use the concept.
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My attempt posted Tuesday:

Long Way

I have

sssstttretchheddd

Myself too thin
Which, in origin, is just
Too little tugged and pulled
Until it screams

Now my mind lies
As my body does
In a position
Of pain and immobility

I hope I may someday

b
u
i
l
d

Who I am
Because who I was
Is no more