Saying it is disgusting is homophobic. Maybe you should look up the definition. If you called me gay i would just laugh in your face, being gay is not an insult. Sadly homophobic people use it as an insult but the truth is, instead of insulting that gay/straight person, they just insult their own intelligence and show everyone how pathetic they are.
Homopbobia is most common amongst the uneducated, so you really just show which group you belong to.