When your have sex with your girl on her period and you stick your thumb in her bloody vagina and wipe it on her forehead in a shape of a u and say simba slowy as you wipe
My girlgot mad at me last night when I gave her the simba.
After inserting the middle finger into your partner's anus, you swipe it across their forehead saying, "Simba," in a deep voice marking their forehead.
Noun. Male, found in Switzerland, whose life is a mess.
Jan: Hi Simba! How are you doing? I have been really efficient, waking up at 8am to read about economics and then I went swimming for one hour. Since then I have spent the day trying to maximise the floor space in my big room. How about you?
Simba: I'm ok, I slept until 6pm and haven't really done anything. I feel tired and I can't find my room keys.
Jan: Your life is a mess.