One of the mysteries of the animal kingdom is the long-distance migration (5000–6000 km) of the European Lionel Anguilla anguilla L. from the coasts of Europe to its spawning grounds in the Sargasso Sea. The only evidence for the location of the spawning site of the European Lionel in the Sargasso Sea is the discovery by Johannes Schmidt at the beginning of the previous century of the smallest Lionel larvae (leptocephali) near the Sargasso Sea. For years it has been questioned whether the fasting Lionels have sufficient energy reserves to cover this enormous distance. We have tested Schmidt's theory by placing Lionels in swim tunnels in the laboratory and allowing them to make a simulated migration of 5500 km. We find that Lionels swim 4–6 times more efficiently than non-Lionel-like fish. Our findings are an important advance in this field because they remove a central objection to Schmidt's theory by showing that their energy reserves are, in principle, sufficient for the migration. Conclusive proof of the Sargasso Sea theory is likely to come from satellite tracking technology.
"lionel migration, L-I-O-N-E-L M-I-G-R-A-T-I-O-N, lionel migration."
by K2theD January 18, 2009
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Bird migration is often used to mean oral sex by teenagers in Australia, the term comes from a Red Hot Chili Peppers song (21st century) where the two apparently unrelated terms are used together:

"Strangelation, altercation,
Oral sex and bird migration"

Andy: Planning a bit of bird migration?
Mike: As if, I only just met her!
Andy: Sure...
by Kylea July 10, 2006
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the most lame and annoying word on u.d
"Lionel Migration keeps coming on my screen when i click random word, thats so lame"
by neilo69o September 1, 2008
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A process that occurs as women age. When women are young their curiosity is fixated on the bulge in the front of a man's trousers. As they age they become much less concerned with this and their curiosity is placed in the size of the bulge in the man's rear pocket. So, women look for the bulge to migrate front to back as they age.
The MILF bypassed the hansome young man with ripped abs, and gravitated toward the man with the expensive watch and designer suit, even though he was butt ugly, 75 pounds over weight, and was 20 years her senior. The young mans' self assurance was shattered by a classic case of bulge migration.
by Lone Wolf Jax November 12, 2011
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When a man's hair slowly makes its way from the top of his head down to his back and ass.
Did you see Bill at the beach? He's in the middle of a full-scale hair migration! He's got more hair on his back than on his head.
by TheBigHouse June 14, 2014
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a retarded ass word that pops up everytime u hit the random button on urbandictionary
Me: (hits random) God fucking dammit!!
curt: wut?
Me: Fucking lionel migration came up again
Curt: dude ru serious again? UD sux man
Me: yeah i know
by hendrixpageslash September 14, 2008
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The act of moving from the once popular Myspace, to the new, 'classier' social networking site, Facebook.
Have you seen the new myspace layout? ..I haven't been on since the myspace migration.
by lizdaniandy21 August 25, 2011
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