overcaffeinating

Verb

overcaffeinate (third-person singular simple present overcaffeinates, present participle overcaffeinating, simple past and past participle overcaffeinated)

1. (ambitransitive) To imbibe or cause to imbibe too much caffeine.
   • Jimmy, my husband, swears I always overcaffeinate the morning of a child's party.2003, Vicki Iovine, The Girlfriends' Guide to Parties and Playdates, →ISBN
2. (transitive, uncommon) To add an excessive amount of caffeine to something.