1) Phrase used by embittered old bastards who find that a band they liked became popular, so therefore they must suck now.
2) When a band changes style and then appeal more to the mainstream than to it's original fans. Often a band did actually become crap when it once was good: e.g. Incubus, Green Day. However, many bands who 'sold out' were already shit to begin with: e.g. Good Charlotte.
A medium to large plant, often grown in gardens. A good example is the current US president, whose intelligence and general ability to run a country is below average as far as bushes go. Also known as a shrub.