H.T.M.L

An acronym for How To Meet Ladies NOT that html you're thinking about.
Erlich from the show wears a t-shirt with those exact letters, a t-shirt so irresistible that you can't help but to hug him.

Meanwhile at a startup event...

Matt: Dude, seriously you couldn't find something else to wear for the event?!
Zeeshan: Whatcha talking about son? This is my favorite t-shirt. AND all the ladies are going to want to MEET me because I know how to H.T.M.L you know what I mean? ;)