1. A phraseused to show appreciation or liking
2. A phraseused towards the opposite sex after something sexual has just been said.
3. Termused to state a blunt want for something.
4. Side comment made to friends to state the implied fact that someone of the opposite sex in your presence is quite attractive
1. "Oh holla! at that miniskirt on that girl over there"
2. girl: "I can fit a wholecarrot in my mouth"
boy: "Oh holla!"
3. "Oh holla! at that quesadilla..."
4. Guy: "Check out that breezy over there..."
Other Guy: "Oh holla!"