Drug?

[v0031]

Prior to 1840, Americans did not tip.  But, after the Civil War, newly rich Americans visited Europe and brought the practice back home to show that they had been abroad and knew genteel rules. A New York Times editor grumbled that, once tipping got hold in the United States, it spread rapidly like "evil insects and weeds."

[This account no longer in use.]

No. The slang term for marijuana is almost always 'weed' (singular). Weeds are invasive plants that can reproduce quickly and aggressively.