the word weeniz is very similar to the words weener and wenis. It is unother way of saying the word penis, but gives more humor and lightness to the word.
Weeniz is used when you aren't really mad at someone but wanna give the jokeingly affect that you are

A pick me is a woman that is willing to do anything for male approval. She will embarrass or throw other women under the bus to achieve this goal. The unfortunate thing about a pick me is usually the men they are trying to seek approval from are of poor quality and treat women badly, leaving little real benefit for the pick me.