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1.
Acronym that originated in the 1950's at MIT meaning "I Hate This Fucking Place". Adopted by attendees of numerous schools afterwards; most notably by the three US service academies, where the letters find their way into not only conversation, but a great deal of graffiti-like uses and spirit missions, or both. Most cadets/midshipmen tend to believe their school (West Point, Annapolis, or USAFA) was the one to originate the term.
Firstie: Freshman, what are the five most important letters you'll learn here?
Freshman: Sir, the answer is, IHTFP!
Firstie: Are you allowed to use acronyms freshman ?!??!
Freshman: No sir!
Firstie: That's right. 30 pushups, now!
by USAFA guy November 30, 2006
 
2.
A five letter abbreviation often used at academic institutions, most notably, MIT. Originally, supposedly, it stood for "I Hate This Fucking Place". Over time, other expansions surfaced, including "I Have The Finest Professors", "I Hate The Fucking Pressure", "I Hunt The Finest Pussy", among others.
by tommyz July 21, 2003
 
3.
An acronym used by students at what are considered to be high-pressure instutions, including, but not limited to, MIT and the various military academies. Historically, the acronym stands for "I Hate This Fucking Place." However, a large number of backronyms have been applied to the term in recent years, the most notable including "I Have Truly Found Paradise," "I'm Here To Fly Planes," and "Ingeneous Hacks To Fascinate People." A long list of these more recent meanings can be found at www.mit.edu/people/mjbauer/ihtfp.html
IHTFP: I Hate This Fucking Place
by ASFalcon13 February 08, 2006
 
4.
acronym for "I Hate This Fucking Place", found in common usage at the Service Academies, particularly the Naval Academy.
by Anonymous April 29, 2003
 
5.
generally referred to as "I Hate
this Fucking Place", most notably used at military institutions
"Man watch again, IHTFP."
by lurch April 29, 2003
 
6.
"I Hate This Fucking Place" number one used acronym at the Naval Academy, especially in 10th company
Practice parades, musters, inspections,watch-IHTFP
by W.T.Door April 10, 2006
 
7.
most commonly uttered single expression at the naval academy.

also means: I'm here to fly planes, I have truly found paradise (tools)
IHTFP - some random mid
by mojo March 23, 2004