The Energy of Love

In this context it goes beyond the literal meaning of a bad day. 'Si tienes un mal día' implies that bad circumstances can push even an ordinarily calm person to extreme actions.

A fixed romantic idiom. It describes intense infatuation, often with a hint that the person is acting foolishly because of it.

Uses 'hacer de' plus a role noun, a very productive pattern meaning to act as or play the part of something.

A softened, humorous substitute for 'nada'. Common in informal speech when emphasising total incomprehension or ignorance about something.

In context it is used metaphorically to mean intense enthusiasm or arousal of interest rather than strictly sexual excitement, but the word is inherently vulgar.

Used in the episode by a female character to refer to female masturbation. The expression can be vulgar in tone but is delivered with ironic detachment.

Often used to express a casual wish or expectation. It can also carry a sceptical or challenging tone depending on context.