Tearing bits off flag, grossly offensive behaviour

• Trouble as a horse runs over
• In fighting mode, slangily
• Aggressive behaviour
• Belligerent, in Britspeak
• Hostile behavior, to Brits
• Greek consumed by past grief
• About to blow, in slang
• Violent behavior, to Brits

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
aggro \aggro\ n. 1. aggravation or aggression. [informal British usage] I skipped it because it was too much aggro

Wiktionary Word definitions in Wiktionary
1 (context Australia NZ slang English) angry. 2 (context online gaming MMORPG slang English) Liable to attack without being attacked first (said of monsters). 3 (context British US slang English) hardcore, aggressive. n. 1 aggravation; bother. 2 (context ...