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i can't see any link, and no, you cant copy/paste others articles.

A joke about a male bus passenger insulting a woman's ugly baby has been voted the funniest gag ever told. Researchers examined more than 1,000 jokes before whittling them down to a final 50 and getting 36,000 people to vote for their favourites.
Source: Onepoll.com

Read the last line of 1st paragraph

not your content, you can't copy.

Bro i'm sorry but from what I've researched,as long as someone gives links to the original content,this is okay.and jokes are universal,a lot of people use popular jokes in their articles and i haven't seen even one of them giving links.I've seen a lot of people using the same jokes which I posted on their blogs/steem/news articles,majority hadn't given links.

look at the top people on steemit, the ones who earn.
this is why your post made 0$

That doesn't mean it's not allowed

so do what you want, and earn 0
bye :)