1) A propensity for making unfortunate discoveries while searching for something unrelated.
2) The specific moment when unfortunate timing coincides with irony.
3) A series of events that converge on an unfortunate outcome.
Other form: Malandipitous, adj.
A man searches all around a parking lot for 20 minutes, and ultimately settles on a space extremely far from the venue. As he walks toward the front entrance, he sees an open parking space right next to the front door. This is a typical case of malandipity.