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When you grab your dong and start jacking off like you're trying to beat the world record before you pass out. Can happen anytime, not just when you're tired.
Bro, I did a Vladimir at 3 a. m. and now I'm falling asleep like a baby.
I did a Vladimir before my mom woke up. She didn’t even know I was up.
I did a Vladimir in the shower and got soap in my mouth. Classic.