A Kevingen is a person that still uses retarded emojis such as ";-;" "-_-" ".-." "._." , or say "Lol" with a capital first L or "xD/XD/xd" or uses the troll faces unironically, basically still lives in 2011-2018.
What a kevingen, he should grow up.
A mix between the word "Aesthetic" And "Thot", often used as a slur against edgy 12-17 year olders that think they are so tough and cool, most of them online date and got edgy profile pictures and use TikTok and play fortnite most of the time.
Look at that edgy looking kid, what an Aesthot !