The French love to create words that sound English but aren't — or have a totally different meaning in real English. Here's the French royal couple doing some "footing en amoureux" in NYC:

According to Wikipedia, footing can have four meanings:

Architecture, Foundation (architecture)
Translation Science, Footing (translation theory)
Bookkeeping, Footing (bookkeeping)
Sexuality, Footing (sexual act)

Nobody got arrested, so the Sarkos weren't involved in footing of the fourth kind…