1. To participate in the act of slanging one's wang.

2. To participate in the act of sexual intercourse.

Wangslanging has many arts:
1) The act of distributing ones downtown bonanza evenly over many portly women in a drunken stuper.
2) Getting beligerantly drunk and breaking out ridiculous average white man dance moves.
3) Chain smoking and telling blatent lies to women who are obviously way out of your league to help further the effort moistening ones weener.