An adjective for the ultimate irritations, describing exclusively that which is so incredibly annoying that the frustration overwhelms one's ability to articulate quite how infuriating it is.
If you can talk about it without screaming in fury, it's not hellannoying.
Hellannoying is an onomatopoeia, because it's annoying when people say "hella" under other circumstances.
#1: "The way Sean Hannity and Bill O'Reilly argue is hellannoying."
#2: "Having to wait to pay when you're ready to leave a restaurant is hellannoying."