2487: Danger Mnemonic
Title text: It's definitely not the time to try drinking beer before liquor.
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The teacher Miss Lenhart warns two small kids using a danger mnemonic.
However, this is actually a mash-up of three different common danger mnemonics, which warn about three different hazards.
- Red touches yellow, dead fellow. Red touches black, happy Jack.
This mnemonic is intended to help recognize a venomous coral snake, which has red, black, and yellow stripes, with the red and yellow stripes adjacent. A nonvenomous king snake also has red, black, and yellow stripes, but the black stripes separate the red and yellow ones. Note that this identification is only accurate in eastern North America, coral snakes in other parts of the world sometimes have black stripes touching red stripes. The safest course of action is to avoid any snake with the warning colors of red, yellow/white, and black stripes. Another corruption of same warning features in 1604: Snakes.
- Leaves of three, leave them be; berries white, poisonous sight. (Alternately: "berries white, run in fright")
This mnemonic is used to identify poison ivy (on the east coast) and poison oak (on the west coast). These plants both produce an oily surface resin called urushiol, which causes an allergic reaction in the majority of people. Touching either plant can result in contact dermatitis, which can be severely itchy or painful. If burned, the urushiol can be inhaled, causing lung irritation. While rarely serious, these reactions are often severely unpleasant, and can last for weeks, so avoiding the plants is well advised. Both plants generally grow three leaves at the end of each branch, and grow berries that turn white when ripe. This characteristic (and the related mnemonic) can help to distinguish them from similar-looking but harmless vines. See 443: Know Your Vines.
- Red sky at morning, sailors take warning. Red sky at night, sailor's delight.
The mnemonic predicts bad/good weather conditions based on a particularly red sunrise/sunset. It is predictive at middle latitudes where the prevailing winds go from west to east. Regions of higher air pressure will cause a particularly red sky at sunrise/sunset, so a red sky in the evening indicates a high pressure system is coming in from the west with its calmer weather, while a red sky in the morning indicates a low pressure front coming in (usually with rain/rougher weather). In some countries (such as the United Kingdom), the saying mentions shepherds rather than sailors. Randall actually wrote a newspaper article explaining this phenomenon.
Combining all three sayings sounds particularly ominous. It implies that a person is involved with a situation simultaneously involving coral snakes, poison ivy, and potentially nasty weather. In such a case, Miss Lenhart advises the children to "just get out of there", implying that the situation is too dangerous to try to deal with.
The title text refers to another mnemonic: Beer before liquor, never been sicker; liquor before beer, you're in the clear. Unlike the first three mnemonics which are genuinely useful for avoiding danger, this one is largely a myth, as the order in which you drink alcohol is unlikely to impact how sick you become. However, whether the mnemonic is true or not, testing it would involve multiple drinks of alcohol, which would be ill-advised when facing a dangerous situation, particularly one as bizarre and complex as implied in this strip.
Also see 2038: Hazard Symbol for another combination of danger warnings.
- [Miss Lenhart is holding a finger up in front of two children a boy with spiky hair and Science Girl.]
- Miss Lenhart: Now, remember:
- Miss Lenhart: If red touches yellow amid leaves of three under a red sky at morning,
- Miss Lenhart: You should probably just get out of there.
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