my amusing pharmacology tutor.

during tutorial today,
we were trying to explain the mechanisms of sildenafil citrate.
the tutor after getting afew students to answer and couldnt get a good enough answer, finally found one brilliant male student.

student: viagra inhibits PDE5, hence maintaining a high level of cGMP in your cells, which causes vasodilation in your copus cavernosum and an increase in your erectile response.

tutor: wonderful. its very clear. but theres a major error in your answer. do you all know what it is?

*silence*

tutor: not "your" but "the". remember, sildenafil is usually for 50+ yrs old men. i'm not that old.