#hhhh

What does "hhhh" mean?
HendraHeHeHarsono, ha_ha_ha_ha, HelpingHaitiHappyHour, hipHopHipHop, HipHopisHipHop, HamtaroHamHamHeartbreak, HoustonHealthyHipHop, HaHaHaHa, HibachiHibachiHibachiHibachi

hhhh-h 32722 hhhh-hh 24945 hhhh-hhh 16404 hhhh-hhhh- 12288 hhhh-hhhh-h 8486 hhhh-hhhh-hhh 5064 hhhh-hhhh-hh 6490 hhhh-hhhh-hhhh-h 2969 hhhh-hhhh-hhhh- 3778 hhhh-hhhh-hhhh-hh 2181 hhhh-hhhh-hhhh-hhh 1899 hhhh-hhhh-hhhh-hhhh-hh 1152 hhhh-haaaaaaaa 547 hhhh-aaaannnn 194 hhhh-hhaaaaa 269 hhhh-aaannn 126 hhhh-hgap 123 hhhh-pho 35 hhhh-hoiyin 36 hhhh-aaaaaaaannnn 214 hhhh-haydenaaaallen101010 154 hhhh-haaaaannnnn 71 hhhh-aaaaannnnn 52