Are you boob guy or a butt guy? The preference of either is split among people, and now science has the answer as to what kind of person you are depending on which you like. Gene Expression, a blog specializing in genetics, performed a study to unveil things about you.

Done in 1960s, this is pretty outdated, but it concludes that guys who like boobs is a 'guy's guy.'

“Also characterizing large-breast preference was a tendency to date frequently, to have masculine interests, and to read sports magazines. Further, large-breast preference was related to a need for heterosexual contact and for exhibitionism (saying witty things and being the center of attention). In social relations, men who preferred the large breasts tend to be non-nurturant and independent. This latter result gives support to Scodel’s (1957) finding of a lack of fantasy dependence among college men who preferred large-breasted figures. In the present study, preference for large breasts was positively correlated with smoking and negatively correlated with endurance (perseverance in work habits).

And if you're an ass man, this is you:

“Preference for the very large buttocks was characterized by a need for order (neatness, organization, orderliness). . . Those who preferred the largest buttocks figure tend to be business majors (accounting?) and tend not to be psychologically minded [* see note, agnostic]. In social situations, they are dependent and given to self-abasement (guilty, self-blaming). Their value orientation tends not to be stoic in nature.”

So which are you? A boob guy?

Or an ass man?

It's hard to decide.