These may be too easy...
Well, here are my intended answers, anyways.
*SPOILERS ! ! ! ! ! ! *
1. Face palm (－‸ლ)
2. Beetle Juice
3. Dog Tired
4. Serial Comma
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Partial and dubious answer
I don't really believe half of these -- the only one I'm really sure of is #3 -- but:
1. face + palm -> FACEPALM.
2. (VW) Beetle + (kinda) juice -> BEETLEJUICE (movie title, presumably deliberate corruption of "Betelgeuse").
3. DOG TIRED (though this one doesn't work in the UK where we have tyres rather than tires).
4. (Don't have a good answer for this yet.)
5. star, gays in -> STARGAZING??
6. (Don't have a good answer for this yet.)
on top of Gareth's answers, maybe: