Susan Sarandon may just be the most badass grandmother ever. The 68-year-old actress has been actively supportive of the legalization of marijuana in the U.S.

A$AP Rocky and Action Bronson's single, "1Train," has been a hit on the charts. The track also features Kendrick Lamar, Joey Bada$$, YelaWolf, Danny Brown, and Big K.R.I.T.

The song boasts the lyrics, "You see us scramblin', sellin' Susan Sarandon, the cloud of smoke like the Phantom," which prompted Susan Sarandon to send A$AP Rocky and Action Bronson a thank you tweet on Wednesday.

The tweet read, "Hey @asvpxrocky & @ActionBronson thx for the shout out on '1Train.' Not sure what it means, but let's blaze one & talk about it some time."

Complex magazine notes that the Susan Sarandon reference is most likely because of Sarandon's support of cannabis legalization.

Although Susan Sarandon seems to have caught up with the news pretty late, since the track was released back in 2013, it's quite adorable to see Susan Sarandon shocking everyone with her sentiments.

The Academy Award winner has even opened up about her viewpoints on marijuana legalization. Back when she spoke for the August issue of "High Times," the "Thelma and Louise" actress said, "It's absurd that more states haven't legalized it."

Susan Sarandon added, "It's an important source of income... you also see the reports on kids who have seizures that are prevented by medical marijuana. You see the relief it gives to vets... it's also a lovely way to socialize and be with people - and to be with yourself and de-stress."

The "Tammy" star has also pointed out that resorting to cannabis instead of alcohol is a better way to chill. "That's the great thing about smoking weed: if you lead a very, very busy life, for me, it really makes the most of your weekend."

Listen to A$AP Rocky's "Long. Live. A$AP." track, "1Train" below.