In 69 BC, the army of famous Roman general Pompey were tricked into eating "mad honey"

[winetourdriver01]

After ingesting the hallucinogenic honey, the troops (and Pompey himself) became delirious and disoriented. At this point the Persian army attacked.

[Aristus]

1. I always found it amusing that that is the most famous surviving

portrait bust of Pompey. Instead of a talented field commander of the legendarily tough Roman legions, it makes him look like a slightly befuddled, office-dwelling middle manager.

[RockRaven]

2. Grayanotoxin

https://en.m.wikipedia.org/wiki/Grayanotoxin

They should have remembered their Xenophon.

[PortTack]

3. Ukraine women poisoned several orcs with cherries