During an interview with Brian Kilmeade on Fox News Radio, the perfect place to say such a thing, Trump said that word of him having sought shelter in the bunker amid White House protests represented what he deemed a "false report." Instead, he purported, it was all about some sweet inspection action.
"I went down during the day and I was there for a tiny, little short period of time and it was much more for an inspection, there was no problem during the day," Trump said, per CNBC's handy rundown.
This explanation, of course, can be filed in the LMAOOOOO department. Per the Washington Post, who cited arrest records and sources familiar with the matter, Trump was actually "rushed to a secure bunker in the White House on Friday evening after a group of protesters hopped over temporary barricades set up near the Treasury Department grounds."
The protests were part of nationwide demonstrations that have remained ongoing in the wake of George Floyd's murder at the hands of police. Unsurprisingly, it's likely that the bunker mockery—which included the widely circulated term "Bunker Bitch"—contributed to the feeble falsehood pusher's later decision to stage that acutely disturbing bible photo op that was preceded (and facilitated) by acts of abject aggression against protesters.
Trump has also threatened the widespread use of military-level force against protesters, though not even noted gun-fuckers on his side of the aisle support that notion.