Explaining Mother Goose and Grimm

Two men in suits and dark glasses are at the door.
"Think, mom..." says Grimm, "who did you hire to whack our weeds?"
"Whack" is a term sometimes used by gangsters to mean "murder", and the dark glasses and suits are stereotypical gangster attire. Also, the men each have one hand inside their jackets, as though reaching for guns. The implication is that Mother Goose has somehow managed to hire some gangsters when she meant to hire gardeners.

Comic