Urban Dictionary Merch
Your favorite words on things you can wear, drink from, read, or give to a friend.
The Urban Dictionary Store sells gifts you’ll have to explain.
Dallan's law
Dallan's law is an epigram that is typically stated as: "If angle looks like 90 degrees, then it is 90 degrees."
The law is often followed by mistake in math where someone assumes that an angle in a triangle is 90 degrees so they can use rules that only can be applied to right triangles.
"90 degrees" can sometimes be a metaphor for something else e.g., "If someone sees a car as red, then it is red". This means that a thing can be perceived as something else even though it is obvious that it only can be one thing. A washing machine can therefore be perceived as a rocket launcher if that person is stupid enough.
The law is often followed by mistake in math where someone assumes that an angle in a triangle is 90 degrees so they can use rules that only can be applied to right triangles.
"90 degrees" can sometimes be a metaphor for something else e.g., "If someone sees a car as red, then it is red". This means that a thing can be perceived as something else even though it is obvious that it only can be one thing. A washing machine can therefore be perceived as a rocket launcher if that person is stupid enough.
Example 1:
David: Why do I get the wrong answer when I use the Pythagorean theorem?
Teacher: Beacause it does not contain a right triangle. You probably utilized Dallan's law.
Example 2:
David: What a nice avocado you got there!
Åsa: Thanks David, but that's a potato. I guess you're right though according to Dallan's law.
David: Why do I get the wrong answer when I use the Pythagorean theorem?
Teacher: Beacause it does not contain a right triangle. You probably utilized Dallan's law.
Example 2:
David: What a nice avocado you got there!
Åsa: Thanks David, but that's a potato. I guess you're right though according to Dallan's law.
Dallan's law by Duckiiiii May 12, 2016
dalbayob
Dalaney
Strong, young, women that is independent. She can do anything she sets her mind to. She is an amazing friend and is very intelligent. She is always there for you no matter what. A Dalaney is someone who can handle roadblocks that come into her life.
Dalaney by closefriend42 February 8, 2010
Dalana
Dalana is a generous, beautiful lady that loves to be active. Dalana is a very nice and caring person. She's always a good babysitter and good with kids. With a Dalana, you can rely on her of being a good mom in the future. She always has great taste in boys and if u ever date a Dalana, shes a keeper
dalbianco
when an individual is only concerned with himself or his belongings (mostly $$). This kind of person is disliked by his peers. Ego-maniac.
That prickkk sure is a dalbianco.
dalbianco by John5rt3fd February 21, 2009
More from Urban Dictionary
Ratfucker
Brought to public attention by Bob Woodward and Carl Bernstein in the book on the fall of Richard Nixon, All The President’s Men, ratfucker was Nixon’s term for a political operative who sows chaos among opponents; an agent provocateur. It is thought to have originated among campus political rivalries at USC, and seems to have some usage in the US military.
Along with Nixon’s other ratfuckers, Roger Stone caused fights at otherwise peaceful Democratic Party protests to generate a false narrative that the Democrats were violent and dangerous.
Ratfucker by Ricky Ramjet November 2, 2017
Word of the Day on November 2, 2026
countrypolitan
Term used to describe someone who is a mix of both rural (country) and urban (metropolitan) lifestyles/upbringings. He/she is typically equally comfortable in both settings and is able to seamlessly slip back and forth between the two, appreciating the characteristics of each.
That ol' gal of mine drives the 12 lane freeway during the week and a John Deere on the weekends. She likes opra and the Grand Ol' Opry. I love them countrypolitan women.
countrypolitan by MOChick November 7, 2006
Word of the Day on November 1, 2026
Witch Bath
A bath consisting of a variety of slats, oils, soaps or any other added ingredients such as fruits, milks, herbs or any other spices for health or beautifying benifits.
Witch Bath by carnieboy30 October 26, 2020
Word of the Day on October 31, 2026
proper lad
proper lad by its_ya_boi_chips_ahoy May 20, 2018
Word of the Day on October 29, 2026