A nerd (especially one into sci-fi shows and science) who is always horny and regularly masturbates.
Emma: "Why isn't Bobby replying?"
Lili: "He's probably revising or wanking!"
*some time later*
Bobby: "Both :)"
Lili: "You're such a sex goblin"
by Mr. Bob Ross December 16, 2021
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Surprising your other half by hiding behind an obstacle only to jump out from behind it revealing you are completely naked shouting the phrase 'sex goblin'. Intercourse guaranteed.
Ny girlfriend loves it when my inner sex goblin is revealed.
by BradTheImpaler December 15, 2015
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