You can't get more witty than this for a strawberry hefeweizen:
Fragaria is the genus of plants from which strawberries are born. Frag also means "ask" in German, in the imperative form (fragen being the entire verb).
Weiss means white in German. It also means "to know". I don't know: "Weiss ich nicht".
FragWeiss is, thus, a very witty play on words: AskKnow, or StrawberryWhite