On this page, you will find 30 slang terms related to grass on the wicket. Some of the top words include: jhand, chick, juicing, Pigeon, THE WAND AND THE HAIRY SACK OF MAGIC, and 25 more.
A slang meaning that means that a young girl has pubic hair (hence grass) around her pussy (hence on the wicket).
Therefore the girl is old enough for sex (hence lets play cricket..)