New vocabulary I have learnt:

a relationship = a couple (you NEED to know this if you move to California.)
(Japanese: kankei/かんけい = this word means a form of interaction between oneself and something/someone else.) Instead of "I am in a relationship," English-speakers would say, "I have a girlfriend or a boyfriend." I never heard, "I am seeing someone."

foot massage = foreplay
In Japan, foot massage was a legitimate therapy.

issues = an individual's psychological hangups "which we all have."
In Japan, an issue was usually a headline in the newspaper or a topic to be discussed at a coffee house or, perhaps, a bar.

to ramp up/down = to increase or decrease (as driving onto or off of a freeway) one's dosage of medication
Escalator ramp? Ramp on the path to the touristy waterfall? In Japan, I don't think I used the word "ramp" in the whole 20 years I lived there.