When a girl inserts a wooden ruler into her vagina to gauge the depth from the wetness of the wood

A man who is capable of consuming copious amounts of alcohol and illicit substances for multiple days in a row, while still being an FTL (full time legend). The name hails from the famous race horse 'Jungle Ruler' who became addicted to crystal meth and was often scratched after putting half his head in a bag of smack before a race. A true 'Jungle Ruler' is a real stayer, and his actions defy belief being able to stay alive after 4/5 days on a drug fueled bender. Long live the 'Jungle Ruler'

An extended clip on on a gun (specifically a pistol) that is 12 inches long.

A growing meme in Happytwt referencing skeppys “I’m as straight as a ruler” tweet

Song by Tally Hall now used in many memes. It switches from light to dark which is why people like to put it on morally ambiguous characters

Penis measuring 12" in length

Alternate term for the metric system. First coined by Thunderbird Reynolds 1921 after Metre Convention was extended to cover all units of measure, not just length and mass.