Look if their English is just okay or even if it is really good. Sometime pretending to hear them say something wrong on purpose is always a easy way to be funny.
If she asks you do you want a shower, answer with I mean "Oh thank you, I know I am very sexy." What is going to say, NO you're not. Or Ask them how old they are, of course they will answer with "How old do you think I am?" I usually will always answer with "80 years old? " with a very serious face. It is so silly she knows you're joking around. Then keep it up, with a straight face and say "I was really going to say 85." "NO you really look amazing for 85". You can take the lead and turn it into physical touching, take her hand spin her around once and then back the other way, as you're checking out her body, give her a big approval and smile and then tell her she looks 80 years old. If she punches you, you're in! You can play it the other way. Most likely she will ask you how old you are, if you're in your 40's say, 22. Again keep a straight face and whatever you don't don't start apologizing with that lame "I am sorry, I am only kidding".
Of course you're kidding. That is the point. If she asks you how many girls have you seen at this place? My canned answer is "Thousands". Then look at them with a very serious face, cross your arms, "Wait you're not a Virgin?" give her a shocked look and pretend to get dress and walk out. Then hit her with a fun smile and a little compliment like, "I really like you. You're fun!". Play the straight man is better then laughing at your own jokes. Now don't act like a complete goof ball. You can have a serious conservation and then you mix in this kind of playful teasing. If you keep her guessing and she wants to hear what you'll say next, that is the secret sauce.
It won't work with every lady. You have to be able to read the room, as they say now. Start slow and you'll know if she likes this kind of thing. I am not suggesting you tell her she looks 85 years old as soon as you walk in the door. Especially if she is insecure about herself or nervous. You also kind of need to be able to talk with your eyes and use expressions well. It really helps a lot. Not over the top but with a sly smile and a sideways glace.