An Americanism first recorded in 1862, of uncertain origin. Possibly from dialectal loll (related to the tongue, idle drooping, or necking) combined with gag. A variant spelling lallygag exists. The word entered English with both the dawdling sense and an amorous sense; the OED noted in 1949 that 'lollygagging was grandmother's word for love-making'. The amorous sense is now obsolete.