Some background on this comic:

Transcript:

This never worked the way I wanted.

In drawing these employees taking a work break and playing "marbles" with their merchandise, I realized I could never say the words "glass eye" in the caption. The players already know they're glass eyes and would most likely refer to them in a more casual vernacular―such as kids do with marbles with words like puries, steelies, cat's-eyes, etc.

But I couldn't figure out any slang names for various kinds of glass eyes. (Or at least not before my deadline.) Maybe it would have been better if the caption read, "Just a word of warning, Myron―if you miss, I'm coming after your Albino Water Buffalo #709."