Someone who, upon being called a cuck, goes to urban dictionary and writes something like:

A term of abuse that anti-feminists, men's rights advocates, racists, anti-gay bigots, white supremacists and right-wing conservatives use to ridicule liberal men, especially those who are gender-equality advocates, women's rights activists and LGBTIA activists.

Derived from the word "cuckold," the term is meant to imply that these liberal men (like heterosexual men whose wives have cheated on them) have been wronged by women and are too stupid to realize it; that they are weak, foolish, ridiculous and contemptible; and that they decline to adhere to the traditional stereotyped male gender role (the last of which, in the minds of the people using the slur, is a bad thing).

Like its close cousin "girly man," and most of the terms of abuse anti-gay bigots use against gay men, "cuck" is in essence a misogynist term, in that it insults men on the ground that they allegedly share traits (weakness, foolishness, inferiority, being worthy of contempt) that sexist people have traditionally associated with women.

The slur has become unhinged from its sex-related original meaning, because racist and ethnically biased conservatives have found it a convenient term of abuse to employ against liberal men in general, even when gender and sexual orientation politics are not at issue.

Under the definition of cuck
Anyone reasonable- Wow, whoever wrote that definition was a triggered cuck
by meme_man_supr3m3 February 16, 2017
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jonny the cuck had a cuck in his cuckish eyeball
by jonnythecuck March 21, 2017
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The favorite insult of people who have been convinced to serve the interests of a foreign government in the name of American nationalism.
Mainstream Republicans are so cucked, cooperating with Robert Mueller's investigation and all...
by Catty McGee November 26, 2017
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Schools often fail to meet the needs of cuck children.
by spitzerken September 22, 2017
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It took me forever to enter that cuck in Toronto last night.
by DangNasty October 3, 2006
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