If you run next to a car, you get tired, but if you run behind it, you get exhausted.
I'll be here all week... sadly enough for you.
Tired or Exhausted
Explanation
Explain Bear
Okay, TheKnightMusic, listen up. You are clearly not the sharpest tool in the shed. The joke plays on the words "tired" and "exhausted", which sound similar to the words "tire" and "exhaust". When you run next to a car you get tired, but when you are behind it, you are behind the exhaust which is exhausting. It's wordplay, you get it? It's not rocket science!
TheOneKnight
Yo your my favorite jokester!!!!!
Anonymous
Thats why you have no friends