verarschen
to mess with
Colloquial, crude: to make a fool of someone, lie to them, or make fun of them.
Willst du mich verarschen? Das kann nicht dein Ernst sein.
Are you messing with me? You can't be serious.

to mess with / bullshit
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to mess with
Colloquial, crude: to make a fool of someone, lie to them, or make fun of them.
Willst du mich verarschen? Das kann nicht dein Ernst sein.
Are you messing with me? You can't be serious.

This word is very colloquial and is often perceived as crude or even vulgar. Use it only in informal situations with friends, and be aware that it can sound impolite.
Erzähl keinen Quatsch, du willst mich doch nur verarschen!
Don't talk nonsense, you're just trying to mess with me!
The word is made up of the prefix 'ver-' and the noun 'der Arsch' (ass). This origin explains the crude and negative character of the word.
Ich habe das Gefühl, der Verkäufer hat mich mit dem Preis total verarscht.
I have the feeling that the salesperson totally ripped me off with the price.
The question 'Willst du mich verarschen?' (Are you messing with me?) is a very common fixed expression. It expresses disbelief, surprise, or anger about another person's statement or action.
Du hast das Auto verkauft, ohne mich zu fragen? Willst du mich verarschen?
You sold the car without asking me? Are you messing with me?
The construction 'sich verarscht fühlen' (to feel messed with) is used to express the feeling of being deceived or not taken seriously. The subject is the person who has this feeling.
Nach all den leeren Versprechungen habe ich mich einfach nur noch verarscht gefühlt.
After all those empty promises, I simply felt like I was being messed with.
to fuck
'ficken' and 'verarschen' can both express that someone is being treated badly or unfairly. 'verarschen' means deliberately deceiving someone, not taking them seriously, or making fun of them. It is crude, but more common in everyday language. 'ficken' is much more vulgar and stronger; in this figurative meaning, it is more like ruthlessly exploiting someone or causing them serious harm. Learners may confuse the words because both sound rough and are connected with anger. If it is about lies or a stupid joke, 'verarschen' is more likely to fit. If it is about serious harm or brutal exploitation, 'ficken' may be meant, but it is very crude.

Ich fühle mich verarscht, weil der Techniker den Termin schon wieder vergessen hat.
I feel messed with because the technician has forgotten the appointment yet again.
Der Verkäufer fickt seine Kunden, weil er ihnen kaputte Geräte verkauft.
The salesman fucks his customers over by selling them broken devices.