When you hold the 'option' button on a MacBook and you drag your finger left to right on your keyboard whilst trying not to press the tab, caps lock, shift, delete, or return button.
friend- "Man, dude, I'm so pumped for tonight's game!"
me- "`¡™£¢∞§¶•ªº–≠«‘“πøˆ¨¥†®´∑œåß∂ƒ©˙∆˚¬…æ÷≥≤µ˜∫√ç≈Ω"
friend- "are you- ok?"