Phrase used when neither party in a conversation can remember a specific piece of information about a given topic. Similar to "Google that!", "Wikipedia That!" is used more for a specific person, event, or place that would generally be found on Wikipedia.
Paul- I heard that the new David Crowder Band cd is coming out this November!
Jake- Naw man, I heard it's coming even sooner than that...
The act of going to Starbucks, more specifically purchasing some type of coffee'd drink from said store (verb).
Kelly- "You going to Bux it up today at 4?"
Haley- "Girl you know I've already bux'd twice today, but seeing as it's nearly impossible to bux too much, I'd be down with spending my bucks on a third bux.