Sober friend:"Dude, did you see what Dumbnuts just did? HiiiIIIIGH-larious!"
or,
alternative usage:
Trashed friend: "BwahhahahahaHAhurdeehuehurheeehehehehaHAr, that is sooooooo FUuuuurrrnyyyheeheeehehehheeee *hic*
lolololol"
Unamused sober friend
sarcastically responds with mocking tone: "Haha, yes, very funny, Highlarious..."