What Would Happen If You Use Orals Sublingually?

Would it bypass first pass metabolism? Kick in faster? Or would nothing really happen

I don’t think anything different would happen because I don’t believe the molecules are small enough to be absorbed that way…essentially you’d just end up swallowing the pill’s contents as it dissolves so you’d end up ingesting it via the pathway the manufacturer intended.
Someone can check my assertion but that’s my gut instinct.

I believe you are correct which is the reason they came up w troches.