Anonymous Caller Big Toe I like my big toe, but is it really healthy to suck on it all day? Akagi Ritsuko Hygenically, or psychologically? If the toe is washed and clean, then there is probably nothing wrong with it. If you have athlete's foot, however, you may be spreading the fungus into places where your physician will be amazed. Psychologically, I would not recommend toe or thumb-sucking in any adult. It is often a sign of unresolved childhood anxiety issues. Orthodontically, it may be hazardous to your teeth, as persistant pulling on them with the toe may cause them to loosen or even slowly shift. So, all in all, I would recommend swapping that for a safer pacifier, then weening yourself off that. At least in the short term, you can tell others that you just came from or are soon to be going to a rave.