SAN FRANCISCO - Larry Fitzgerald's chest bumps are no joke.

Don't believe me?

Just as Earl Watford.

Watford, an offensive guard listed at nearly 300 pounds, was knocked over by Fitzgerald after the wide receiver caught his second touchdown pass against the 49ers.

📱💻: https://t.co/uYKwzdd9JF
📺: @nfloncbs #TNF #AZvsSF #BeRedSeeRed pic.twitter.com/yZqRQOyTr2

— NFL (@NFL) October 7, 2016

I'm sure there will be jokes in the locker room about this.