<human>: For me it has to be tipping at coffee shops. Barring great service, I only do it if the barista / cashier is a younger woman who is relatively attractive. I really just realized I do it when I had coffee and a pastry this morning, it came out to $5 exactly I handed her a 20, and got a ten and five ones back. As I was stuffing the money back in my wallet I realized I was given the 1's so I could tip but the thought hadn't even crossed my mind.

If there is a decent looking girl I feel compelled to leave a tip and would feel bad if I didn't have a dollar or some change to throw in the jar. But when its a guy or a woman I don't find attractive it isn't that I am consciously not tipping them I am just not even thinking about it.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: I realized I only tip at coffee shops if the cashier/barista passes the "I'd bang her test"