One who will defend his or her share of blankets by any means necessary.
Oftentimes blanketeers will even go so far as to deprive the second party in the bed of adequate amounts of blanket for sufficient coverage.
"Dammit Allison, I’m freezing, you are such a blanketeer."
"Christ man, I woke up totally sans covers this morning, Ruddy is such a blanketeer."
Blanketing is the newest internet sensation where one wears a blanket over their head in various public settings and posts a picture online. This is the new "planking" except it is way more fun, and planking is pretty stupid anyway.
The (sometimes quick) process whereby an interesting idea, song, or object becomes so trite and smarmy that you are ashamed you ever thought it was cool to begin with.