He may be old but he got the right wing nuts to fall into a trap. I guess he
can think on his feet. This is just one example and there were others, but this one was the best. He must have been irradiated with gamma rays before the speech.
https://nymag.com/intelligencer/2023/02/biden-2023-state-of-the-union.html
"New House Speaker Kevin McCarthy maintained a disciplined frown for most of the address, applauding and even standing when the subject-matter required it. But Biden was lustily heckled by Republicans for the second year in a row, and this time not just by a couple of extremists. But Biden turned their rowdiness to his advantage. The loudest complaints were provoked by his (totally justified) taunts about Republican malice toward Social Security and Medicare — evidenced by Senator Rick Scott’s plan to “sunset” these and every other federal program. The Republicans roared that that aren’t actually after these programs, allowing Biden to sarcastically take credit for GOP “conversions” to the cause of protecting these programs and the seniors who rely on them. McCarthy looked pained at how his charges walked into a predictable trap that Biden sprang expertly and even joyfully in off-script interactions with his detractors."