Must have been an empty fire ant hill. This is what happens when you touch one that is active.
KIWF!!!
Watch your back! The PETA extremists now have you on their radar.
Fire ants meet FIRE!!!
What does that mean?
Kill it with fire…it’s the only way to be sure…
Chris
Nuke the entire site from orbit--it's the only way to be sure. 
Or this guy
Thanks. I kept looking that up and found nothing as slang or anything else that might explain it.
Hah? I just goggled “kiwf” and got, in order:
Kill It With Fire (video game)
kiwf - Urban Dictionary
KIWF » What does KIWF mean? » Slang.org
KIWF - What does KIWF stand for? The Free Dictionary
KIWF Defintion. What does kiwf mean? (noslang.com)
What does KIWF mean? - Definition of KIWF - KIWF stands for Kill It … (acronymsandslang.com)
ad nauseam
Anyhoo…