To check a word or phrase on Urban Dictionary - the definitive source of human knowledge (of the best kind & quality).
Derived from the term "Google it": to check on Google.

the 11th unofficial urban chain.

When you’ve already typed in “Urban” and “Urban Urban” and are seeing how far it goes

When your in class and get bored of searching up urban on the urban dictionary so you do the only logical thing you can do... search it up twice.

the eighth iteration

This is a term used when you're checking how much the "urban" string goes but someone called you down for lunch and you came back and forgot about checking. Then you remember it sometime when you're staring into your phone at night.

when ur too lazy to type out urban dictionary