If our calculations are correct, this is adorable.

On Wednesday, Michael J. Fox offered fans a blast from the past with a photo of him and Back to the Future co-star Christopher Lloyd. The pair reunited at a poker tournament benefiting the Michael J. Fox Foundation for Parkinson's Research held annually by Fox, each sporting their iconic grins and mutual affection. Fox was diagnosed with the disease in 1991, and founded the charity organization in 2000.

"All in with mrchristopherlloyd at @michaeljfoxorg Poker Night!" Fox wrote in a post to Instagram.

Although Fox and Lloyd have reunited many times since debuting their sci-fi smash hit in 1985 (including for multiple sequels), it has become a rarer occurrence in recent years. The two are, however, frequently photographed at Michael J. Fox Foundation events.

"Going 88mph for the @michaeljfoxorg Poker Night," Lloyd said in a similar post made Thursday.

Great Scott, that's good.