- verb to run away or escape from prison. The verb form is probably a back-formation from the phrase ‘on the lam’, although ‘lam’ originates in the verb ‘lambaste’, meaning to hit or beat.
- verb to have sex with. Like many of its synonyms (boff, biff, bonk, etc.), the term uses the notion of striking in evoking sex from the male perspective. Lam in its earlier colloquial sense derives from the Old Norse lemja, meaning to thrash.