1 Starting to die out, you old hippies liked to wear this (3-3)
2 Several Northeastern states (4)
3 He cannot perceive the depths of his monstrosity (7)
4 Root cause of insolence (5)
5 Liberal extremists taken in by Bill? Who asked their opinion? (8)
6 Grab 'em by the pussy! (6)
12 Runner (athletic, perhaps) is 0 for 1 (3,5)
14 Start rubbing in middle of belly. Dog is horny! (7)
16 Selected stockings in China (6)
18 "I am last player off" - good bloke at rugby club (6)
19 Contact is the beginning of pain, it's said (5)
21 Found in the road up Eketahuna way, I took him in (4)