Though I agree you shouldn't get back at her, that simply shows your effected.
But on a similar theme, I feel personally it is healthy in a relationship to remind your girl the type of women you like.
I.e when a sexy women comes on TV or even walks past you in real life that has, say a cracking pair of legs. To me, I simply look and make no apology of it. I'd even go so far has to say "Wow check that out".
Now I know firsthand this is very effective, it is a great tool to use for asserting your standards. For example if an attractive slim women comes on TV, and you state 'my she has got a great body', your girlfriends hamster in her head will be spinning over-drive and 9 out of 10 times she will be judging herself based on that comment, which to me is a good thing.
As for stating 'you want to fuc* someone', I only do this, if I have complimented a girl on TV and my girl makes an issue of it, say a women who comes on TV now and again, if she comes on TV and my girl say's 'so and so is on TV' - Then i'd ramp it up a notch, knowing I've got under her skin, it's also a pleasure to see my girls face every time I make a positive comment about some hottie on screen, especcially someone she know's I like.
On the other hand I also re-enforce the alternative, if a fat women comes on screen, I am rather vocal on that too, or say if I am sat in a resturant and a fat women is shoveling food in her gullet, I will ask my GF to swap seats so I can’t see the fat oik pigging out. I actually go an extra mile in this regard with a girl, then I would do alone. Because it shows her without being critical of her personally, what I like and dislike. For fat people I'd say things like 'god that's disgusting', or ramp it up an extra notch for effect 'Why would any man find that thing attractive, dam last thing she needs is more food'. I get really anal, but there is a reason for it, I know being vocal about it, has an extra effect of showing her that I wouldn't tolerate fat chicks, hence it is a subliminal type set up to show her, if she starts to relax, I wont be happy at all. The more anal I can be now and again the more, I feel it enforces that point.
Edit - Any guilt trip feelings from my girl are knocked on the head and challanged, with male logic. For example, if my girl says 'dont be nasty', when I have made a comment about some fat chick on TV. I will state 'I'm not being nasty, i'm being truthful'. At first this resulted into chick logic of emotional fuc*ary "She probably cant help being that size because of XYZ". Which I knocked on the head instantly with the logic that; food makes one fat, the rest is simply bollo**s to sell women diet fads that don't do shi*, that an excercise bike can't fix. Now when I make a comment, depending on the severety she either joins in and agree's, smiles or shakes her head, but has never arguing her point since.
Hence if you do it, you have to be prepared for the follow ups and dont sway from the path, even when the chick logic starts coming out, or the shaming language, which when checking other girls out, there is plenty of shaming techniques that men have been subjected to, to keep them from checking other girls out, which I feel is counter-productive, because in truth, it creates a competition anxiaty in your girl and makes her re-asses herself. Ofc this is not being Anal and doing it for every-girl, but at least tossing this stuff out now and again for effect.
At least once per week is a good start, but I tend to do this about 2-3x per week, if I see a really fat chick, i'll comment each time. Likewise for a super attractive girl who looks after herself.