Consecutively double faulting three or more times during a game of tennis. May also refer to a number of variants all involving failure during a game of doubles specifically - repeatedly slamming easy balls into the net, awkwardly jumping in the way of a team mates ball and instigating an uncoordinated unforced error, missing the ball entirely, or performing a poor man's version of the Van Damme splits while sliding and then holding the general lower back region.

This is accompanied by profuse swearing (usually in the form of an f-bomb), complaining, and/or blaming inanimate objects and non-existant environmental factors such as 'the wind'. These factors (and others such as breaking things and wiring things up wrong) inherently exist regardless of whether there is a tennis game going on, yet they are an essential component to truly Kaspering something.
(After someone unnecessarily jumps in, and rather poorly, does something that you had covered and were all over): "Wow, you sure Kaspered that one!"

Person 1: "Dude, the server's not working."
Person 2: "Yeah, it's been Kaspered".

(After someone excessively complains about something, for example, complaining the whole way while running 10km): "You sir, are the Kasper of running".
by coneman March 25, 2013
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A handsome male whom participates in FUCKBOY acts.
"Woah, dude you're acting so Kasper TAIT. Chill with the FUCKBOY acts."
by 🌚ops March 18, 2016
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When a guy receives a rim job while standing like captain Morgan
I came home from work and saw my husband standing with one leg up on the coffee table. It was time for a Dirty Kasper
by Mom_pounder69 June 20, 2020
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Oh. My. God. I've never seen something more huge, holy fucking priestly shit. Kasper's dick is the most massive thing in the entire fucking UNIVERSE. It beats Kenny's dick, Marcus' dick, and even Bri's dick.
Ever seen kaspers dick?

YEAH THAT THING THAT FILLS THE UNIVERSE?
by sexyguy12443332 January 2, 2021
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The intention of doing something-or not doing something- for 24 hours, but only lasting 6 hours.
"I planned to go 24 hours without my phone but I just had to pull a Kasper and only go 6."
by Yiikkeessss August 23, 2016
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Legendary german boy who arrived in nuremburg unable to speak or explain who he was. Two excellent films have been made of his life, and death. One of the great mysteries of the 18th century.
I want to be a rider like my father
by Miles Pieri January 8, 2004
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