Definitions by Thomas Jahn
utr
a shortage for "under the radar" used to describe the status of being offline on e.g. msn messenger in order to avoid contact from specific people, but still being able to communicate with those desired.
utr by Thomas Jahn November 13, 2007
friend hopper
In order to describe a person who "hops" around from friend to friend or clique to clique, and only acts as a friend when he/she is in need of a favor, or else he/she is never heard from.
Man that Erik is such a friend hopper, the only reason he was hanging out with me was so I would help him study for the exam.
friend hopper by Thomas Jahn November 13, 2007