During 7 years in Medina, who did Mohammed worship when he faced to the Kaaba for worship meanwhile Kaaba was full of pagan idols?

IF you study the Sahih Hadiths and History of Islam, you will find that the original direction of the prayers - the qiblah, was Jerusalem - the mizrah of the Jews.

Mohammed [piss be upon him] and all the Muslims, prayed to Jerusalem till Mohammed [piss be upon him] changed the qiblah to the Kaaba much later.

The earth is round. This means that whenever Muslims bow down towards Kaaba, they at the same time are sticking our their posteriors to it. This should be called mooning the moon god.

He thought the stone of the Arabian/Egyptian snake god was the divine stone from God in the Bible carrying Adam and Eva to earth.

He worshiped hard ons.

Yep.

He still worshiped Allah, who else.

I have no idea!