A phobia (from the Greek: φόβος, Phóbos, meaning "fear" or "morbid fear") is, when used in the context of clinical psychology, a type of anxiety disorder, usually defined as a persistent fear of an object or situation in which the sufferer commits to great lengths in avoiding, typically disproportional to the actual danger posed, often being recognized as irrational. In the event the phobia cannot be avoided entirely, the sufferer will endure the situation or object with marked distress and significant interference in social or occupational activities. (from wikipedia)
http://phobialist.com/alam natin na kahit gaano ka-macho ka pa or ka-cowboy, may pagkakataon na takot na takot tayo sa isang bagay o pangyayari.
Acrophobia - fear of heights. --kapag umaakyat ako ng building or ano mang mataas na lugar tapos titingin ako sa ibaba... para umuurong ang *tlog ko na parang nahihilo