A lap dance is a type of sex work performed in some strip clubs in which a naked or topless dancer performs an erotic dance either in immediate contact (contact dancing) with a seated patron, or within a very short distance. With full-contact lap dances, the stripper may engage in non-penetrative sexual contact with the patron, such as "grinding" her body against his. Variant terms include couch dance which is a lap dance where the customer is seated on a couch, and bed dance where the customer lies down. In some places a block session of lap dances (usually half an hour to an hour) can be booked in a "champagne room". In many clubs, the duration of a lap dance is measured by the length of the song being played by the club's DJ. Charges for lap dances vary.

Depending on the local jurisdiction and community standards, lap dances can involve touching of the dancer by the patron, the patron by the dancer, neither, or both. In some clubs, any touching by the patron is forbidden. On the other hand, absent any oversight by the club, various levels of contact may be negotiable between the participants. Clubs vary widely with regard to whether they enforce their rules, or turn a blind eye to violations.

A lap is a surface created between the knee and hips of a bipedal being when it is in a seated or lying down position.

There are numerous consumer devices created specifically for use with the lap. The laptop, for example, was designed for people who required the use of a computer when away from their usual work space. As portable computers grew smaller, some evolved into "notebooks", in reference to their small physical size, instead of its possible positioning during use.

An earlier consumer product designed for the lap was the lapdog. A small dog, usually a terrier, which was bred to sit in the lap of a wealthy or fashionable European woman.

In some forms of the Christmas tradition, young children sit upon the lap of Santa Claus to tell him what gifts they would like. Around the Christmas buying season each year, many malls, especially those in North America are known to offer an area where parents can bring their children to partake in this tradition.

A "lap dance" is an erotic dance and sexual act. It is commonly performed as a paid service by exotic dancers to their clientele. A lapdance is performed by one person straddling the lap of the other and gyrating their lower extremities in a provocative manner.

Dance is a type of art that generally refers to movement of the body, usually rhythmic and to music, performed in many different cultures and used as a form of expression, social interaction or presented in a spiritual or performance setting.

Dance may also be regarded as a form of nonverbal communication between humans, and is also performed by other animals (bee dance, patterns of behaviour such as a mating dance). Gymnastics, figure skating and synchronized swimming are sports that incorporate dance, while martial arts kata are often compared to dances. Motion in ordinarily inanimate objects may also be described as dances (the leaves danced in the wind).

Definitions of what constitutes dance are dependent on social, cultural, aesthetic, artistic and moral constraints and range from functional movement (such as folk dance) to virtuoso techniques such as ballet. Dance can be participatory, social or performed for an audience. It can also be ceremonial, competitive or erotic. Dance movements may be without significance in themselves, such as in ballet or European folk dance, or have a gestural vocabulary/symbolic system as in many Asian dances. Dance can embody or express ideas, emotions or tell a story.