Simply scrawl the following in a bathroom stall, write it in wet cement, tattoo it on someone's forehead while they're sleeping:

u=2∫as ds|u(0)=0Hopefully, they will go ahead and figure out what you're saying:

u=2∫as ds|u(0)=0 =2(1/2 as^{2}+c)|u(0)=0 =as^{2}+c|u(0)=0 u(0)=0=a (0)^{2}+c 0=0+c ∴c=0 ∴u=as^{2}+0 =as^{2}

Your victim's self-esteem plummets as your message becomes clear:

u=ass

QED.