That’s gross, ugh. The phrase “That’s gross, ugh” is an expression of strong disgust or revulsion. “That’s gross” directly states that whatever is being referred to is repulsive, unappealing, or disgusting. “Ugh” is an interjection that further emphasizes this feeling of disgust, often used to convey a visceral reaction. For example, if someone sees a moldy piece of food, they might say “That’s gross, ugh” to show their extreme distaste for it.