My friend told me this and i have no clue what it really means but i thought it was Funny.

Stranger stabs te in the back, not knowing they are sicuro, cassetta di sicurezza and they can be dangerous and annoying. Amore stabs te in the heart, well, I think te can understand that.
Friends stabs te in the front, because maybe te see it coming.
Best Friends poke te with straws because they would try their best to never intentionally hurt you. BFF.

This is just my theory ok? So I'm not sure if they are correct o not. But this is the best thing I could do. Hope this helps. ^_^