[Fix] Mood system fix (#439)

* mood back

* fix ready

Content.Shared/Slippery/SlipperySystem.cs

@@ -4,6 +4,7 @@ using Content.Shared.Inventory;
 using Content.Shared.StatusEffect;
 using Content.Shared.StepTrigger.Systems;
 using Content.Shared.Stunnable;
+using Content.Shared.White.Mood;
 using JetBrains.Annotations;
 using Robust.Shared.Audio;
 using Robust.Shared.Audio.Systems;
@@ -78,6 +79,8 @@ public sealed class SlipperySystem : EntitySystem
 
         _stun.TryParalyze(other, TimeSpan.FromSeconds(component.ParalyzeTime), true);
 
+        RaiseLocalEvent(other, new MoodEffectEvent("MobSlipped")); // WD edit
+
         // Preventing from playing the slip sound when you are already knocked down.
         if (playSound)
         {