sell yourself- hail to the abnoxious con-artist

The great fanciful curator of the continual brain-biting offence of theft perhaps caused by an irreversible case of kleptomania??strolls in with a wily rictus painted on his face, the devil's in the detail they say, they who?
What I can't stand is the salesperson demeanor. That wanton casual attitude that isn't casual at all maybe sleezy maybe fake maybe a little daunting in a way that it makes you clench your purse tighter or even strangely concious of ur sternum...what is marketing , sorry for being overly overtly simplistic and satirical about this but yes what is marketing?
"The art of selling to people who don't originally want to buy"
to me that's the devil's work it doesn't even pretend not to be sinister or gauche. It is exactly what it poses as: a sleazy guy in an expensive suit playing 'chase the fanny??"

Okay that was over the top. I'll just go with an analysis that makes me come-off as less spiteful and more annoying.
i was rude today very rude...to one such charector. and I feel bad 'cause it happens to be my father(though the entire category of men of that nature irks me to respite). 'but not bad enough to apologise 'cause that's only asking for more.

I understand that MBAs and salesperson's of the like are taught to sell and oner-up and perhaps even cheat and steal and be total ruthless self-selling self-centered pigs and it isn't their fault therefore and then there's the pat on the back that they give themselves 'I duped her/him!" look at me.

and for what? standing forcibly at a person's doorstep selling encyclopedias to those who can't read.
maybe I overreacted
this instance was no more annying than the rest but I barked and I feel exactly as bad as he wants me to, which means he's giving himself kudos.

anyway i'm learning German online and since this computer lies in the ultimate no-privacy hell-zone AKA my living room.I can't repeat words out loud without whoever wants to listen, listening.
Wie gehts?
means "how are you?"
gut means good
there's also the obvious:hallo
Anyway so he comes up and starts yapping about Germany(and he doesn't know German)
and how (in his gimmicky salesperson style) he 'happened'to 'overhear' me practising 'wee gates'(which isn't how it's pronounced it is more like 'gits' or something)and so I correct his pronunciation 'I'm only 'just' learning myself'
so he gets defensive(again all smirky smug one-uppy and unreal defensive, not the usual natural defensive) and says you mispronounced 'und' it's oond(I think it's actually ount-ish) right. So I snapped (naturally defensive) and I kinda felt bad 'cause he didn't snap at me but that doesn't remove his intention hmm
thus this somewhat shaky tirade.

Anyway, it really isn't about that. Moreover it concerns the need to study alone without interruption and so on. And the whole grinning grinch type just gets on my nerves.