So on and so forth.
Useful when listing multiple related items without listing each one.
Math professor: "So, v1 is connected to v2, v2 is connected to v3, SOASF. Yes, there's a question in the back?"
Student: "What was the last word you just said?"
Math professor: "Oh, SOASF. It means 'so on and so forth' ".
Student: "Thank you."