What the...?
Fortunately, the chap in the picture has explained all on Reddit, writing:
"Hello this is the tall person. The purple psychedelic leprechaun genie wizard. I am new to this site and these comments are funny as. I am 6'10 208cm and i live under a bridge and eat childrens skin for the record, thank you......however I recommend if anyone goes to lotus temple New Delhi use this illusion."
Well, that clears that one up, then.
(Via Laughing Squid/Reddit)