Stand behind the yellow line.
Not blue like Klein, not red red wine, not puce-ish pink like calamine.
The sign declines divine design.
The sign enshrines thy storyline.
No deadline for a live line where a life line flatlines.
Not a dead line, a lifeline, this death line.
A bright line for a bloodline.
It's a foul line, this foul line,
a fell line, this fall line.
For some a goal line,
for all a front line.
We, the undefined undersigned, remind the plum wine inclined:
Please, stay well off the well-off line,
lest one's incline go supine,
one's plumb line turn minus sign,
one's outline make headlines.
For the saddest punch line outshines the sunshine:
"But doctor," the B whines,
"I am the train line!"