meaning of ad HOMO-inem attack

ad HOMO-inem attack meaning in Urban Dictionary

After showing that the homosexual lifestyle is indeed promiscous and illness ridden, which there clearly was without a doubt a "gay agenda", therefore the approach to life and agenda being detrimental to Christian Judeo values and western civilzation in general, your opponents (because they cannot argue against realities), accuse you for the items that they've been protecting all along.