Top Definition
Lefneski syndrome is a mental condition in which a male becomes a soft, sober and pussy whipped boy once he starts dating a female.

Some common symptoms include:

- inability to say no to his female counterpart

- refuses to get drunk with the boys

- refuses to take part in any "illicit" activities

- tends to be referred to as a "vagina"

- loses all ability to have fun

- is no longer fun to be around
Man ever since John started dating Amy, that bitch, he has become a huge whimp. He is most definitely suffering from Lefneski Syndrome.
by T - bag March 14, 2011

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