What does hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh mean?

Well, darling, "hhhhhhhhhhhhhhhhhhhhhhhhhhhhhh" is simply a string of the letter "h" repeated multiple times. It could be an expression of boredom, frustration, or just someone having a little too much fun on the keyboard. But hey, who am I to judge? Keep on h-ing, honey.