The phrase "tickles death" is a figurative expression that refers to something that is dangerous or risky. It implies that a certain activity or situation could lead to death, but it is also exciting or thrilling. There are several synonyms you can use to express the same idea, such as a close call, a brush with death, a near miss, a dangerous thrill, a death-defying act, a risky adventure, a hair-raising experience, a heart-stopping moment, a perilous situation, a high-wire act, or a deathly excitement. Regardless of which phrase you choose, they all capture the notion of living on the edge or taking risks that could have fatal consequences.