iyeet

It's a more excited or enthusiastic way of saying "Alright" or "'Ight". It is actually just I YEET without the space, and since yeet means to get pumped up or excited about something, you're really just saying you're yeeting.

Boy: "Hey did that girl we were talking to before say she was comin' over?"

Friend: "Ya man. In a couple hours."

Boy: "IYEET!"