Consummation of a marriage is the first act of sexual intercourse between a married couple. Consummation traditionally, is what validates the marriage contract. Any marriage not consummated, can be broken off without a divorce.

Thus, in relation to a union of two homosexuals, because it is physically impossible to have Sexual Intercourse between members the same gender (sexual intercourse being defined as the penetration of the vagina by the penis), any "marriage" contract between the homosexual parties, is legally unenforceable, it is null and void because the contract can not be "signed" so to speak.

I think we either need a new word for "Gay Marriage" or force the government to start using the words "Civil Union" for EVERYONE and stop using the word "Marriage." But hey..., that's just me ;)

What would - consummation of a marriage - mean in relation to gay marriage?

It seems to me the link you provided explains it well enough doesn't it?

Consummation or consummation of a marriage, in many traditions and statutes of civil or religious law, is the first (or first officially credited) act of sexual intercourse between two individuals, following their marriage to each other.

._.

It means in relation to marriage that Joe is obsessed with what gay people do in bed, therefore a little gay himself... for like his 500th gay debate.