<human>: This is kind of a silly and trivial question so bear with me...

* I never drink to excess, but I will have maybe one beer a night before I go to bed. When I go to parties, I'll maybe have 4 or 5 drinks. Seven tops if it's a real rager. This happens maybe a few times a month because I'm not really a party person.
* When I have a beer or two, I don't get drunk but I get really sleepy, which annoys my girlfriend (understandably) since I'm not that much fun. Honestly, I just feel old and creaky and I have a 9-5 job (she doesn't) and sometimes when I play a concert or when I'm at a party, I have to take a 30 min power nap backstage or on someone's couch so that I can awake with my 2nd wind, haha.
* Sometimes when I'm drunk I will make dirty jokes, but it's hard to tell which ones will offend her. For example last night we were talking to our good friends and she mentioned having multiple orgasms to them, so clearly she isn't a prude or anything, but then later on in the night when she was bent over in an unintentionally compromising position in front of me while fixing a DVD player, I made some comment about it and she iced me out for a little bit.
* I get anxiety when I drink around her sometimes because I have no way of predicting what she will or will not get pissed about (that night or sometimes the next morning...sometimes she doesn't tell me until way later after I can tell something's bothering her and I really push her for an explanation.

So really, I just want better ways to communicate with her (she is very nonconfrontational and will just sit on a resentment and let it fester) and make her happy. Before anyone says "you don't have a drinking problem, you have a girlfriend problem," there are lots and lots of unrelated reasons that she is awesome and caring and respectful and loving. The drinking is just one thing that gets on her nerves, but I don't know how to both make her happy, and have a good time in the way that is most comfortable for me.

Can you summarize the given text in a few sentences?
<bot>: I like to drink occasionally, but I don't know how to do so without annoying my girlfriend. How can I make us both happy?