Superbad (2007)

The Girl: Jules (Emma Stone)
 
The Geek: Seth (Jonah Hill)
 
The Technique: Hill's portly, potty-mouthed wise-acre tries an old-fashioned attempt to win over his lady-crush by offering to bring alcohol to her party.

Things don't really go to plan as he and best mate Evan (Michael Cera) end up on a wild night of mishaps and police encounters.

And when a drunken Seth does get to express himself to Jules, he ends up accidentally head-butting her. Strangely, this seems to be what wins Jules over.

But let us make it clear - giving a girl a black eye will not make her love you. It will result in damaged testicles.

Next: American Pie