We've got an advertisement in the Kyiv metro of a woman coming out of a bubblebath with a teacup. What she's doing in the bath with full makeup and a three-strand pearl choker on, I don't know. (I haven't tried the tea, either - its bagged in Moscow, not Sri Lanka, so who needs it?) And there are whole calendars full of women with guns. Even if he ripped the idea from you, he might well be immersed in the genre enough to point to half a dozen other examples.
When it comes to shooting people and firearms, it seems to be a matter of execution.