Language observers may have noticed the existence of two past tense forms for the verb to sneak in American English, sneaked and snuck. Interestingly, both forms have not always coexisted; the original form is sneaked, and snuck has only recently become a real competitor for sneaked (Hogg, 1988: 31–32). The verb to drag seems to be somewhat in the same situation with the original past tense form dragged as well as the new form drug (Bybee & Moder, 1983: 252). However, drug is much less frequent than snuck. Murray's (1998) study on the attitudes towards snuck and drug suggests some difference in the usage of these forms across registers.