You speak of laughing and cumming (note proper spelling for the vernacular) in the same sentence. I logically (or perhaps not so logically) put the two together to arrive at a scenario where a female would laugh at the supposed brevity of an "encounter" with a male and point at the male's "equipment" and laugh. To avoid a total and humiliating embarrassment, certain protocols have been developed over the eons. Ergo, You can point, and you can laugh. But you can't point and laugh.
Oh, and