guys , ive gone in with a opinion opener before, and it didnt seem to work

i walk over to a 3 set one being an 8 and one being a 7 and one being a guy i approach and say

guys a cant be long but just need your opinion on something, and i pull out the whole who lies more girls or boys they come out with boys definatly
then i say ok so who are better liars and again they take an interest and say girls definatly

now they were interested and the guy clearly didnt like the fact id come in a ruined his little party and shot me down by saying, what the fuck are you some kind of survey man,

now the girls absolutley creamed over this joke and bang that was it i just was kicked to the kerb game over,

any advice on how to avoid it or where i went wrong ?

cenzy