When you have an sexual attraction towards being the Kaiser of Germany
Girl1: My man just randomly started to overtake Germany while having a boner.
Girl2: Damn girl you have a "Dirty Steffen"
After you finished having the SEX with your partner, you creepily stare at your partner and try to intimidate them.
Bro1: My girl stared at me creepy after fucking.
Bro2: Damn man you got your self a "Dirty Leni"