My theory is it exaggerates their emotivity. It advertises on a primal level that they are open to emotional displays, and can reciprocate the emotional range that a femoid dumps on your average beta. Plus it's nonthreatening and goofy, which on a more societal level shows they are fun-loving and humorous. It's a compensating mechanism for their lack of masculinity, so they subconciously highlight their ability to emote and invite femoids to use them as an emotional dumpster. Fascinating phenomenon. I used to do this whenever a camera was pointed at me in my blue pill emo subculture cope days.