H4 [a.k.a. h4, Hx4, HHHH / hhhh] (
Hardy Har Har Har) is the new LOL.
This is not to be confused with H3 [a.k.a. h3, Hx3, HHH / hhh] (
hardy har har) which has different connotations as found in definitions #1 and #2 of the linked source.
LOL is for virtual dinosaurs.