huh?

I discovered a word that all non-native English speakers I have met here use, and which I have never heard used by anyone in the states.

"aggress"

Even my Mozilla Firefox spell-checker wants me to finish this word, with "-ive" or "-or" or "-ion". It's used here in the following ways:

'I was just biking through the park and she began to aggress me! She yelled and swore at me, and told me I couldn't be on my bike on that path."

'We were aggressed yesterday by a couple men."

Has anyone ever heard this? Maybe it's a British thing and so all the Europeans learn it?