Dude, I totally know what you mean. Like, one time, I was just walking home from school right, and I was walking through the student carpark and this guy had his arm around some girl. I felt a little nauseous, but it's just something you have to live with, so I walked on.
But the worst was yet to come.
So I kept walking right, and barely three cars later I saw another couple. And... like... this is really hard to say, so just gimme a minute, k?
*sob sob sob*
The guy... he like, leaned over to the girl AND TOUCHED HER LIPS WITH HIS LIPS!! I was like "WHOA! Don't those people know that's where food goes? Lunch time's over, idiots." How disgusting. I mean, I wouldn't want to give anyone the displeasure of tasting my peanut butter and jelly sandwiches of an afternoon.
I was vomiting and bleeding from the eyes the whole way home.