straightforward guy

A lust-crazed stud who's being totally "open 'n' honest" regarding his tongue-lolling interest in a hot chick, in dat he's stark-naked and his "downstairs tongue" is majorly "lolling" as well --- i.e., da "object of his desire" is both stiffly-extended parallel with da ground and sticking out directly ahead of his abdomen, in eager readiness to be inserted into said luscious looker's equally-juicy love-tunnel.

Telling yer teenage-sweetie's "paw" dat you're a 100% straightforward guy may not actually instill much confidence in said watchful/protective parent's mind, in dat (A) he himself was a teenage lad once, and so he knows only too well how hot they can get between their legs, and (B) he'll be able to easily see da massive crotch-bulge dat you're "obviously" sporting, and so he may think twice about whether he's okay with your palling around with his "little pumpkin" unsupervised! :P