The act of eating so many tacos that you literally start sweating and smell like it. This smell entices the user to go out and buy even more tacos.
(Real Mexican tacos; not that Tacobell hard taco bullshit.)
I remember eating around 30 carne asada tacos, the next morning I woke up with taco sweats and got 20 more for breakfast. I didn't even bother showering I smelled great.
Physical and mental anguish caused by eating at Taco Bell, whilst fully aware that it will be followed with regret. This usually consists of a Volcano Burrito meal at the Taco Bell on Newport Road in Cardiff, Wales.