So I suppose the idea of spray-on condoms makes some amount of sense. According to Reuters:
If nothing else, it eliminates the "I don't know what size to get" excuse. On the other hand, I don't see any discussion of removing the condom - which strikes me as a potential issue.
BERLIN (Reuters) - German sex educators plan to launch a spray-on condom tailor-made for all sizes.
Jan Vinzenz Krause from the Institute for Condom Consultancy, a Singen-based practice that offers advice on condom use, told Reuters on Thursday the product aimed to help people enjoy better and safer sex lives.
"We're trying to develop the perfect condom for men that's suited to every size of penis," he said. "We're very serious."
Krause's team (spraykondom.de) is developing a type of spray can into which the man inserts his penis first. At the push of a button it is then coated in a rubber condom.
[ ... ]
He said the spray can would likely cost some 20 euros ($26) as a one-off purchase. The latex cartridges -- sufficient for up to 20 applications -- would cost roughly 10 euros, he said.
Krause said he had hit upon the idea when considering the difficulties some people faced using condoms, and drew inspiration from spray-on plasters now used in medicine.