TEEV is usually spelled all-caps, and is usually spoken in an exaggerated or raised-voice to express consternation with another person. While TEEV is usually used defensively in response to some real or imagined attack, it's use is still playful, as amongst friends.
Definitive origin unknown, but suspected to have been first coined by Jeff Lorien after a Page/Plant concert in the '90s
Related to Tev
(Dude 2) "TEEV, dude. You aren't much better!"