Can I use a ram or a baby ram as a weapon?

So, in my friends new DnD campaign, I created a goliath barbarian that grew up in the high mountains with animals roaming around and live on a farm with rams. His name is Braun and he stands 8 feet tall and about 400 pounds to be a solid tank for the team.

Our first quest outside the bar our group met might happen to be in the mountains and if there is a ram there I was wondering if I could pick it up and throw it like a javalin. Specifically, just so I can yell "Baby ram is on the job."

https://www.youtube.com/watch?v=zYd8D804bT0

Here's my inspiration for it, but curious about how much damage it would actually do if I could succeed because my Gm said he'll think about it haha