
lackieren
to lacquer
To coat a surface with a layer of lacquer, paint, or a similar protective substance.
Er will die alten Holzstühle neu lackieren.
He wants to lacquer the old wooden chairs again.
to lacquer / to trick / to get drunk
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to lacquer
To coat a surface with a layer of lacquer, paint, or a similar protective substance.
Er will die alten Holzstühle neu lackieren.
He wants to lacquer the old wooden chairs again.

to trick
Colloquial for deceiving, taking in, or cheating someone.
Lass dich von dem Verkäufer nicht lackieren, das Auto ist viel zu teuer.
Don't let that salesman trick you; the car is much too expensive.

to get drunk
A colloquial, casual expression for drinking alcohol, getting drunk.
Komm, wir gehen am Wochenende mal wieder einen lackieren.
Come on, let's go get drunk again sometime this weekend.
The verb 'lackieren' (to lacquer) is derived directly from the noun 'der Lack' (lacquer/varnish). It describes the action of coating something with lacquer.
Für diese Tür brauchen wir einen wetterfesten Lack.
We need a weather-resistant lacquer for this door.
Only the meaning 'eine Oberfläche mit Lack überziehen' (to coat a surface with lacquer) is neutral and literal. The meanings 'jemanden täuschen' (to deceive someone) and 'Alkohol trinken' (to drink alcohol) are purely colloquial and should be avoided in formal situations.
Die Werkstatt muss den Kratzer im Auto neu lackieren.
The repair shop has to repaint the scratch on the car.
In its literal meaning, 'lackieren' (to lacquer) is often used for specific objects. Typical phrases are: 'ein Auto lackieren' (to paint a car), 'Möbel lackieren' (to lacquer furniture), 'die Fingernägel lackieren' (to paint one's fingernails), or 'Holz lackieren' (to lacquer wood).
Sie lässt sich vor der Party die Fingernägel rot lackieren.
She is having her fingernails painted red before the party.
The colloquial expression for 'sich betrinken' (to get drunk) has a fixed structure: 'sich (Dativ) einen lackieren'. The word 'einen' is a fixed part of the idiom.
Nach der harten Woche will er sich am Freitagabend mit Freunden einen lackieren.
After the hard week, he wants to get drunk with friends on Friday evening.
to booze / to drink
Saufen is a colloquial and derogatory term for drinking large amounts of alcohol. Lackieren has this casual meaning only in the fixed reflexive expression „sich einen lackieren“. You can therefore say that someone säuft or sich einen lackiert, but not simply that someone lackiert.

Nach dem Spiel lackieren sich einige Fans bis spät in die Nacht einen.
After the game, some fans got drunk until late into the night.
Nach dem Spiel saufen einige Fans bis spät in die Nacht.
After the game, some fans boozed until late into the night.