damn your car is minty man, those have probably never been taken out. When brand new, the rubber seals on the lights "glue" the light housing into the trunk. Gently pry with a flathead screwdriver, they'll come out.
You only have to do this the first time you take them out, afterwards it will be easy.
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2002 TiAg M3 6mt
deoranged, dechromed, led tails, ZHP knob, UUC SS v3, GROM, OEM 220M 19's, Michelin Supersports
2006 YZF-R6, bunch of go-fast stuff