For those not in the know, Cialis (Tadalafil) is very much like Viagra (Sildenafil) — that is they are used to treat impotence (erectile dysfunction). Cialis tablets are taken orally, colored yellow, film-coated, and almond-shaped. Cialis’ 36-hour effectiveness earned it the nickname, “The Weekend Pill”. In contrast, Viagra is only good for four hours. Anyway, enough medical talk — just go watch the video below and laugh your heart out!