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5.
When two adorable young men force their tonuges down each other's throats.
Dylan an Evan began to clex and the tempertautre in the room rose.
by BIG K December 22, 2003
 
1.
Shortened word to describe the loving union between Clark Kent and Lex Luthor.
That clex scene was full of loving gazes and flirty smiles. Those two love each other so.
by Van December 20, 2003
 
2.
1)When two good looking men love eachother,
2)a fanfiction relationship in which Clark Kent and Lex Luthor are "together"
or
3)a VERY GOOD thing.
It was a clex story.
by sillygaze March 18, 2005
 
3.
Good and Evil make a convincing go at a merger.
The clex was so strong that aunts three streets away blushed and wrote to the Times.
by WhassaSnood December 29, 2003
 
4.
Abbreviation of the words "Clothed" and "Sex". Meaning to hump someone without removing clothes. Manytimes done on high school buses as a joke to irritate someone.
"Andrew got so mad last night when we had clex after the track meet"
by The Wolverine9 October 11, 2011