Verb
sticky finger (third-person singular simple present sticky fingers, present participle sticky fingering, simple past and past participle sticky fingered)
Alternative form of sticky-finger (“steal”)
To steal, to pilfer; to make off with (something).
Used other than figuratively or idiomatically: see sticky, finger. To touch or finger something which is sticky, or with fingers that are sticky.
Source: en.wiktionary.orgsticky-finger