Go to the image's page and click "Show Embed Codes"
To get a direct link simply cut and paste the Image Link code in the comment box, click Post Comment, then refresh the page.
To get a "click to show" is a little more complicated but if you'll past the entire code from the BBCode link in the comment box then delete the text on both sides like this:
DELETE FROM HERE >> [url =imgflip. com/ i / 1eze0n] [i m g] TO HERE h t t p s: / / i. imgflip . com / 1eze0n.jpg DELETE ALL THIS-->>> [/img][/url][url= imgflip . com/ memegenerator]via Imgflip Meme Generator[/url]
so that ONLY this part remains (I put spaces inbetween all the characters so it wouldn't render and you could see it) h t t p s : / / i . i m g f l i p . c o m / 1 e z e 0 n . j p g
Then refresh the page.
You'll get this:
https://i.imgflip.com/1eze0n.jpg