Answer:
I can be short and sometimes hot. When displayed I'm never cold. What am I?
I am put on the table, cut, but never eaten. What am I?
I go up but never come down. What am I?
I run smoother than any rhyme, I love to fall but cannot climb. What am I?
I smell like blue paint pours like green paint and I look like a red truck.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.