Wow, man! That's totally gnarly!
Near the mouth of the river is a sandy spit with low buildings decorated with oyster shells and gnarly driftwood.
During the rest of the day people will continually spray black grime into my mouth, which I am then instructed to spread over my teeth for the ultimate gnarly effect. Tastes gnarly, too.
If it is a gnarly mess with lots of internal callouts to other systems to maintain parallel state changes, then you have some cleanup to do before trying a parallel implementation.
I see conundrums, dilemmas, quandaries, impasses gnarly thickets of fateful possibility with no obvious way out.
There, he ran into a gnarly old lady.