a special type of allergy that makes u laugh uncontrollably and burst out into spontaneous song singing (horribly might i add)
ladonna syndrome is very bad for your health.
WELL La Donna singing and if you don't know her well just picture a a Banshee(A mythological, female, magical creature that flies all night looking for prey. They feed on people's sadness. They kill by screaming in such a high pitch that it breaks glass and the arteries of its victem's body so that they drown in their own blood) lmfao