Floos

This tall plant bears small fruits similar to blackcurrant seeds in size and color. Their acidic taste is similar to lemon. Eating its berries has the property of increasing the tension in the eyeballs with the consequence of breaking certain small blood vessels which fill the eyes with blood. Vision is not affected, however. One can doubt the interest of eating these fruits given the consequences that this entails. In fact, several barbarian tribes are fond of floos because the bloody eyes of warriors who consume it only further intimidate their opponents.
Eating floos berries gives a +2 bonus to Charisma (Intimidation) checks for a duration of 1 minute. There is no known contraindication to abusing these fruits, despite the spectacular appearance it can give.