Sentence 1: I was drinking soda with my friends. 
 Sentence 3: I was scared that I would fart 
 Sentence 4:  Luckily, it was a burp 
 Sentence 5:  Alas, my friends still made fun of me for burping 
 Option 1: Suddenly i had the urge to throw up. 
 Option 2: Suddenly, I felt something in my stomach.