That could have been J.Lo smooching Madonna instead of Christina Aguilera.

J.Lo was a last-minute no-show at the VMAs, where she was originally cast to play Aguilera’s part opposite Britney Spears and Madonna in the show’s titillating opening number.

Was it the prospect of playing tonsil hockey with Madonna?

A rep says no – and explained that Lopez had to go to Winnepeg to reshoot scenes from “Shall We Dance?” co-starring Richard Gere.