Effort Jokes

I tried to make it to the end of the rainbow but didn't due to lilac of effort.
"Really, our time together has just become more effort than you're worth."
“Why do married people live longer than single people? I think it’s because married people make a special effort to live longer than their partner—just so they can have the last word.”—Janet Periat
I wanted to redo the flooring in my bathroom, but I did not have enough tiles...
It was a few'tile effort.
Son: What happens when white blood cells fail to protect us from an infection?
Dad: Their effort goes in vein.