added fat toxin : the toxin that makes you fat

GainStation13/code/modules/reagents/chemistry/reagents/toxin_reagents.dm

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+//we'll put funky toxins here
+
+//fattening toxin
+/datum/reagent/toxin/lipoifier
+	name = "Lipoifier"
+	description = "A very potent toxin that causes those that ingest it to build up fat cells quickly."
+	taste_description = "lard"
+	reagent_state = LIQUID
+	color = "#e2e1b1"
+	metabolization_rate = 0.5 * REAGENTS_METABOLISM
+	toxpwr = 0
+
+/datum/reagent/toxin/lipoifier/on_mob_life(mob/living/carbon/M)
+	M.fatness = fatness + 3
+	return ..()

GainStation13/code/modules/reagents/chemistry/recipes/toxins.dm

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+/datum/chemical_reaction/lipoifier
+	name = "lipoifier"
+	id = /datum/reagent/toxin/lipoifier
+	results = list(/datum/reagent/toxin/lipoifier = 3)
+	required_reagents = list(/datum/reagent/sugar = 1, /datum/reagent/consumable/cornoil = 1, /datum/reagent/medicine/synthflesh = 1)