in the Tznius book it brings down r shmuel wosner shlit’a
Not an American Posek. Thanks for the info, but not applicable to the OP (unless the OP lives in Israel).
Uneeq, “ma’ase eretz Mitsraim” is a z’nus-related issur. All the applications of it have to do with inter-gender relations.The posuk itself is mentioned in the parsha of arayos. It not the same as thinking of eating treif. I am not sure that it would fall under “lo sasuru…”. For sure, it is not nice.
Lo Sasuru is a much more general Issur, not to do things or think of things that are “Taa’vadik”. You should see the Chinuch on this, its almost saying addiction to any Ta’anug is the Avairah!
http://www.hebrewbooks.org/pdfpager.aspx?req=37518&st=&pgnum=48