The wide swing of the arm when a douchebag goes in for a handshake. The less secure in their masculinity, the further the arc.
Gregory swung his arm around at a wide angle before grabbing my hand and shaking it roughly. The full "needle-dick's parabola," as Socrates called it.
by UN~MUDO~POCO March 2, 2021
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a phrase used in situations where a person finds to be frustrating- used in the same context as 'suck my dick/cock'.

most commonly used in the IB by IB students as their brain deteriorates into mush.
person a :fuck off
person X: suck my parabola
person b: you're strange- i no longer know you
by ibstudentwooh May 21, 2009
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