Definition:
"Gag" is a slang term that means to feel like vomiting or to have a strong urge to vomit.
Use case:
You can use this slang when you feel nauseous or sick to your stomach. For example, "I ate some bad food and now I feel like I'm going to gag."
• I can't watch horror movies, they always make me gag.
• I accidentally swallowed a bug while riding my bike and almost gagged.
• The sight of the dead rat made me gag and run out of the room.
• My friend's impression of our teacher was so accurate, it made me gag.
• The comedian's jokes were so funny, I nearly gagged on my drink.
• That medicine tastes so bad, I gag every time I take it.