Guys really like if when you don't agree with something they say and you have a completely different opinion. It starts a great conversation and it shows that you have personality. If they say that they don't like a song artist and you actually do then don't keep it to yourself! Say it! The important thing is just to be yourself. Before you know it the guy will like you for who you are.
Come on have a think. Try to be unpredictable, put your hat on and say "does my head look big in this" it depends on how close you are, if you are flirting you might try "if I sit near you do you promise to keep your hands to yourself?" if he says yes you then say "OH well I'll sit somewhere else then" get the idea. If he says "no way" say "oh, that'sOK then" and sit down. If you have just met being funny can be difficult, it is easy to pitch it wrong and look a bit foolish. Try "I'm really a blonde under this wig, could you please talk slowly" self effacing humour is quite endearing, especially when linked to a little "unrehearsed" sharp wit. Hope this helps.
Hey did I say you could sit there?!? Say its it a public place, they will be startled at first and then laugh when they realize you are joking..... I do this to guys in the restaurant I waitress at, it always gets me a good tip
