Juanukitis
A disease derived from Mexico that causes one to act out irrational and unwonted behavior. Such behaviors can include singing horendous 90s rap songs, slight to severe head twitching, swelling of the antecubital and popliteal and the need to carp on ones writing and/or grammar skills.
Juanukitis symptoms include: onion smelling fingertips, neck pains, and severe giggles.