That's the idea! Would ultimately be up to valve. There's a speaker behind the head to illustrate that. I'm not sure if there's already a MOO sfx in the game so i didnt really demo it

Maybe its a direct axe reskin stats wise that does the moo and mini crits/crits on milked targets? Gives it a similar niche as neon annihilator, but given that being milked is out of your control it'd seem unfair to give it much downsides. Only downside I could imagine is no random crits or maybe swing speed. Plus could be a fun mvm item.

Fire Axe Reskin

On hit/Mini-Crit: Plays cow sound

On Crit: Plays bull sound

PROS:
-100% Crits VS Milk/Jarate/Gas doused enemies
CONS:
-Marked for death upon missing a hit.

Bovine Basher
Level 1 Cow board on a stick
Slot: Melee (All Class)

+On Hit: https://www.youtube.com/watch?v=dr0Wl5rSNIs
- No Downsides because reskin

[~] Humiliates players it hits.

[+] On Kill: +100% chance for Critical Hits for 4 seconds

[+] On Critical Hit: Heals for 30% of damage dealt

[-] Mad Cow: -45% health from packs and healers on wearer (except Mad Milk)

Also has a secret effect that gives it a 50% chance to moo on kill, and a 10% chance to leave a small wooden cow calling card (like outta the powerjack set)