What does "Ya no pengas con mi" mean in English?

Answer 1

"Ya no pegas con mi gusto"
-->You don't match with my taste anymore

"Ya no pegas conmigo"
-->You don't like me anymore

Well, "pegas" (not pengas, you misspelled it) is a slang for "match".

"Esas cortinas pegan con la alfombra"
-->Those curtains match the carpet

But since it is slang, the meaning could slightly change from country to country. For example:

"No pegas una"
--> You don't do well anything

In this case "No pegar" means to do bad

Answer 2

Ya no pegas conmigo = You don´t fit with me anymore.

in this case pegar is = to be fitting or appropriate, to accord, suit, go well (with)

Answer 3

Them penguins can't con me.