nalolbittif
You think it's funny but you're too lazy to actually laugh out loud. It's like you're pretending you're not a total dork.
'Nalolbittif, bro. I'm too tired to even fake-laugh.'
'I saw the meme and did a nalolbittif in the middle of my mom's soup.'
'He said 'boomer' and I did a nalolbittif while eating a burrito.'