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When that one friend is always taking photos and or videos at inappropriate times and uploading to social media to try and cause the person captured embarrassment. Thornhilling can occur anywhere and at anytime, but is usually when the victim is in their most vulnerable state,e.g. Intoxicated
Fruit: "Hey man did you hear that Cohen passed out in the shower last night and he blocked the drain and flooded the whole bathroom"
Simon: "Bro I didn't just hear about it, I saw it online. Aron was up to his old tricks and was Thornhilling him"
Fruit:"Thornhilling is a new kind of low"
by mayeastbeast March 29, 2015
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