in the every day world hesh means something kinda gnarly but also cool. for example, "dude i just fucked a biker chick with a fat bush!!!" is totally hesh
in the skateboarding world it means go big and dont be a pussy
for example, "dude honestly, i thought your cock was fatter than that. so just sack up and get hesh"
a biker chick with a fat bush
dude sack up and just get hesh. who knows maybe if you stick this trick that biker chick will suck yo fat cock