je vais t'en donner

i'm going to give you some

→ je
phrase Rare #39,081
i'm going to give you some Can also mean 'I'm going to give you one' depending on the noun. The pronouns mean 'to you' and 'some/of it'.
FR: Je vais t'en donner un autre.
EN: I'm going to give you another one.

Je vais t'en donner!

I'll give you some!

— Chute libre (1993)

Je vais t'en donner une.

I'll give you one.

Je vais t'en donner, mon vieux.

I'll give you some, old man.

Je vais t'en donner de l'eau, emmerdeur.

I'll give you some water, you pain in the ass.

Je vais t'en donner.

I'll give you some.

Je vais t'en donner un aussi.

I'll give you one too.