tank up
Verb
Meaning
(transitive, intransitive, Canada, US) To fill up (for example, a tank in a vehicle with gas, petrol, etc.).
(transitive, intransitive, slang) To intoxicate oneself, especially with alcohol.
(intransitive) To install a tank.
Source: en.wiktionary.orgSynonyms
Examples
Chief of security : They have a tank! How did they get a tank up here?