Marty Jr. watches six television channels at once. Bottoms Up's breast implants commercial can be seen in the top right-hand corner of the multi-channel video screen.
The Super Inflatable 'TIT' was one of two special types of breast implants in 2015, offered by Bottoms Up as part of its "2 for 1" sale, the other being the Headlight 'TIT'.
A television commercial for this special offer was shown on channel 63, one of the six channels watched by Marty Jr. on the multi-channel video screen at the McFly residence.
According to the commercial, the Super Inflatable 'TIT' was intended for "that last minute adjustment".
