Prospecting

[Merna]

The act of [sifting] through the [fallow] stems, [seeds], and shake of ones remaining marijuana purchase in the hopes of picking out something worth smoking.

[Dave Paprocki]

[the art] of picking out [the good] [females].

[Ernesto]

[Eating out] the [bootyhole] until you discover [nuggets] of turd.

[Tariq Zaki]

To search, as for gold.