1) Someone who has a massive head

2) Someone who is very cocky and arrogant
1) "Look at the swell head on Barry"

2) "Siroos your a f**kin swell head"
by Danny Hird December 28, 2005
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This boy has the biggest head in all the lands he was produced by a super human (shano) he used his legendary steak night powers to transfer into his first born, that power was so great the only place it could fit was in this boys enormous head from that day his head continued to grow therefore obtaining the name swell head
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Noun: 1.) a person who has become infatuated with the idea of power 2.) someone who thinks they are above all others after being given a minor position of authority; those with swell head are unable to listen to the thoughts and ideas of their colleagues due to the pressure from the swelling inside their head. 3.) the penis that a person has been sucking in order to attain this position of power/authority.
Egomaniac work slut's brown nosing finally worked and now her swell head was out of control as the boss put her in charge of being in charge. We all wondered if he was concealing his swell head beneath his trousers after long meetings with work slut.
by Fair Lady January 7, 2011
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Head Swell means when someone becomes very cocky about something and they feel like nothing can happen to them. They up doing things out of pocket like cheating, or over bragging because one feels like “good” things can’t be taken from them.
Example #1: Oh I just took some nigga bitch, she bad asf and she feens over me bro 🤣 I got her on lock

My nigga don’t let your head swell bruh.

Example #2: I’m lowkey cheating but she’ll always come back to me at the end of the day 🤷🏾 ♂️😂😂 so I’m not even worried

Bro.. you letting your head swell like you’re untouchable and everything you do doesn’t have a consequence 😐
by 50zMon007 February 13, 2020
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The act of studying an extensive amount in one sitting, to the point where one's brain feels like it has gotten bigger from soaking in so much information.
I should study. I think I'm going to go get my head swell on on at the library and hit the books hard so I can crush that western civilization exam that I have tomorrow morning.
by missoneill March 20, 2013
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What you give a guy "upstairs" when complimenting him on the impressively "ballooned" status of his "crown" that he possesses "downstairs".
One should take care when verbally admiring a guy's desire-engorged "equipment" while you're also giving him a blowjob, since this may give him a major "swelled head" both "upstairs and down", and of course may also cause him to involuntarily make a huge mess all over your face in the process.
by QuacksO April 9, 2020
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