Problem: How to respond when a gay friend comes out of the closet
Be civil regardless of your beliefs.
Not everyone shares the same beliefs and it's possible that you may have reservations about homosexuality. While you have every right to maintain any set of beliefs you wish, don't hold your friend to the standard of your belief system.

Answer: Even if you don't understand, try to appreciate the fear and stress involved in coming out to you. Your friend is still your friend, regardless of your feelings about homosexuality.

Problem: How to be a grammar nazi
Make sure you don't split infinitives.
Familiarize yourself with the uninflected form of verbs. Examples include: to cry, to run, to hide.

Answer: Keep these two words together when using them. Do not place an adverb or adverbial phrase in between them.

Problem: A woman in man in black clothing stand in together and discuss a routine. The woman begins dancing and goes in a circle a few times while the man watches. the woman
Answer: continues discussing the routine then holds hands with her partner and they begin dancing together.