Come on peeps, your not thinking evil here. My friend has suggested that i wait till the wedding night and them assume the rodeo position..........for those of you unfamiliar with this, its a rear entry position where after mounting you lean forward, grab both of her titties and whisper into her ear ......."hmm, these are even firmer than your sisters" then you hang on for dear life !
No way, dont dare to joke about her sister's or familyyou might be in trouble... say her friend instead!