That's fucking why.
Don't ever question my irrational fears. This is serious. Remember as a kid, eating apples, oranges, grapefruit, and your parents would warn: "Don't swallow the seeds or a tree will grow inside you." And you were like, "Stomach trees? That's some fantastical bullshit, Mom. Tell me another one." Well, in case you still haven't clicked the link...
That shit is fucking true! From the article: "A five-centimeter branch is too large to be inhaled or swallowed, doctors say. They suggest that the patient might have inhaled a small bud, which then started to grow inside his body."
Fuck that. I will never scavenge the forest floor for tree buds and ingest them through my nostrils ever again.