Look, if you're useful, people are always trying to take advantage of you. Given bees' necessity in the natural order of things, it should come as no surprise that blister beetles aren't the only species screwing with them.

Many orchids also look and smell like females bees, and induce males in similarly fruitless dry humping (or "pseudocopulation," if you want to be scientific about it). Orchid pollen attaches to the bee, which acts as the orchid's detachable penis, taking the pollen to another orchid.