A

• abpoofen - to lazily doze off
• abrauchen - to burn out / die off (often used in reference to machines / computers)
• abschädeln - get wasted (drunk)
• abspritzen - to ejaculate ¹
• amtlich - righteous
• anbaggern - to pick up (sexual)
• angraben - to pick up (sexual, aged expression)
• anmachen - to make a pass (sexual), to pick on (bully)
• anschaffen - to prostitute, whore out
• anscheißen - to give someone shit about something
• Arsch, der - the ass, an ass, etc
• arschficken - to take it up the ass (same usage)
• Arschlecker - asskisser
• Arschloch, das - Asshole (same usage)
• Arschlochkarte ziehen, die - to draw a blank ¹, to roll a zero
• Aufreisser, der - (the) one who makes it his paradigm to pick up women

¹ Directly taken from http://notam.uio.no/~hcholm/altlang/ht/German.html