It’s a r/bonehurtingjuice meme (a little like an anti-meme, but bonehurtingjuice takes memes and recontextualises them).
The original comic it’s referencing shows an air hostess asking someone to turn off a tablet for takeoff. An older man, holding a book, chimes in with ‘I guess I don’t have to turn mine “off” eh? Ha! Heh heh.’
The laugh in particular is so off kilter and strange it became a meme in itself, a very persistent one used in tons of other bonehurtingjuice memes.
Inspired by the story, another landlord decides to name their pub “Pig and And and And and Whistle.” Lo and behold, the sign was cramped… Ther needed more space between Pig and and and and and And and And and and and and and And and And and and and and and Whistle.