redicking

Having sex with someone that you used to (but no longer) dated or had sex with...

After 5 years of not seeing each other, they met up again, and he started redicking her...

newdicking

Having sex with someone who you haven't had sex with before... (See also: redicking)

- I thought you were redicking that chick you used to date?

- I am, but I'm newdicking the chick I went out with last night....