1) A person trying to convey an image that is unlike his or her actual self typically through large amounts of makeup.
2) Something, such as a television show, attempting to mimic a more popular counterpart.
Adam is Trying Too Hard to convince us that he's slept with Amy, the class whore.
Mission Hill is Trying Too Hard to be King of the Hill, as evidenced by its very title.
Woman2: My boyfriend hits me during sex and not during sex.
Guy 2 - Ya, his Napoleon Complex is showing, he is totally trying too hard.
Girl 1 - Andrea is trying too hard. She thinks she is so hot when she pops her cleavage and shows her ass.
Girl 2 - Whatever, that skank doesn't realize we can see her cottage cheese thighs in that mini-skirt.